##### 



PROMISSORY NOTE
 $375,000
    
    August 7, 2006




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##### 



Network Installation Corp./s/  Jeffrey R. HultmanBy:




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##### 



EXHIBIT A to Promissory Note
 
 InterestRate
    
    
    PrincipalDate/Payment Number



    
    
    Payment
    
    
    7.00%
    
    
    Balance375,000.00August 3, 2006 - 1
    
    
    
    
    
    
    2,000.00
    
    
    
    2,187.50
    
    
    
    375,187.50September 1, 2006 -2
    
    
    
    
    
    
    2,000.00
    
    
    
    2,188.59
    
    
    
    375,376.09October 1, 2006 - 3
    
    
    
    
    
    
    2,000.00
    
    
    
    2,189.69
    
    
    
    375,565.79November 1, 2006 - 4
    
    
    
    
    
    
    2,000.00
    
    
    
    2,190.80
    
    
    
    375,756.59December 1, 2006 - 5
    
    
    
    
    
    
    2,000.00
    
    
    
    2,191.91
    
    
    
    375,948.50January 1, 2007 - 6
    
    
    
    
    
    
    2,000.00
    
    
    
    2,193.03
    
    
    
    376,141.53February 1, 2007 - 7
    
    
    
    
    
    
    2,000.00
    
    
    
    2,194.16
    
    
    
    376,335.69March 1, 2007 - 8
    
    
    
    
    
    
    2,000.00
    
    
    
    2,195.29
    
    
    
    376,530.98April 1, 2007 - 9
    
    
    
    
    
    
    2,000.00
    
    
    
    2,196.43
    
    
    
    376,727.42May 1, 2007 - 10
    
    
    
    
    
    
    2,000.00
    
    
    
    2,197.58
    
    
    
    376,924.99June 1, 2007 - 11
    
    
    
    
    
    
    2,000.00
    
    
    
    2,198.73
    
    
    
    377,123.72July 1, 2007- 12
    
    
    
    
    
    
    2,000.00
    
    
    
    2,199.89
    
    
    
    377,323.61August 1, 2007 - 13
    
    
    
    
    
    
    2,000.00
    
    
    
    2,201.05
    
    
    
    377,524.66September 1, 2007 - 14
    
    
    
    
    
    
    2,000.00
    
    
    
    2,202.23
    
    
    
    377,726.89October 1, 2007 - 15
    
    
    
    
    
    
    2,000.00
    
    
    
    2,203.41
    
    
    
    377,930.30November 1, 2007 - 16
    
    
    
    
    
    
    2,000.00
    
    
    
    2,204.59
    
    
    
    378,134.89December 1, 2007 - 17
    
    
    
    
    
    
    2,000.00
    
    
    
    2,205.79
    
    
    
    378,340.68January 1, 2008 - 18
    
    
    
    
    
    
    2,000.00
    
    
    
    2,206.99
    
    
    
    378,547.67February 1, 2008 -19
    
    
    
    
    
    
    8,000.00
    
    
    
    2,208.19
    
    
    
    372,755.86March 1, 2008 -20
    
    
    
    
    
    
    8,000.00
    
    
    
    2,174.41
    
    
    
    366,930.27April 1, 2008 -21
    
    
    
    
    
    
    8,000.00
    
    
    
    2,140.43
    
    
    
    361,070.70May 1, 2008 - 22
    
    
    
    
    
    
    8,000.00
    
    
    
    2,106.25
    
    
    
    355,176.94June 1, 2008 - 23
    
    
    
    
    
    
    8,000.00
    
    
    
    2,071.87
    
    
    
    349,248.81July 1, 2008- 24
    
    
    
    
    
    
    8,000.00
    
    
    
    2,037.28
    
    
    
    343,286.09August 1, 2008 - 25
    
    
    
    
    
    
    8,000.00
    
    
    
    2,002.50
    
    
    
    337,288.59September 1, 2008 - 26
    
    
    
    
    
    
    8,000.00
    
    
    
    1,967.52
    
    
    
    331,256.11October 1, 2008 - 27
    
    
    
    
    
    
    8,000.00
    
    
    
    1,932.33
    
    
    
    325,188.44November 1, 2008 - 28
    
    
    
    
    
    
    8,000.00
    
    
    
    1,896.93
    
    
    
    319,085.37December 1, 2008 - 29
    
    
    
    
    
    
    8,000.00
    
    
    
    1,861.33
    
    
    
    312,946.70January 1, 2009 - 30
    
    
    
    
    
    
    8,000.00
    
    
    
    1,825.52
    
    
    
    306,772.22February 1, 2009 - 31
    
    
    
    
    
    
    8,000.00
    
    
    
    1,789.50
    
    
    
    300,561.73March 1, 2009 - 32
    
    
    
    
    
    
    8,000.00
    
    
    
    1,753.28
    
    
    
    294,315.01April 1, 2009 - 33
    
    
    
    
    
    
    8,000.00
    
    
    
    1,716.84
    
    
    
    288,031.84May 1, 2009 - 34
    
    
    
    
    
    
    8,000.00
    
    
    
    1,680.19
    
    
    
    281,712.03June 1, 2009 - 35
    
    
    
    
    
    
    8,000.00
    
    
    
    1,643.32
    
    
    
    275,355.35July 1, 2009 - 36
    
    
    
    
    
    
    8,000.00
    
    
    
    1,606.24
    
    
    
    268,961.59August 1, 2009 - 37
    
    
    
    
    
    
    8,000.00
    
    
    
    1,568.94
    
    
    
    262,530.53September 1, 2009 - 38
    
    
    
    
    
    
    8,000.00
    
    
    
    1,531.43
    
    
    
    256,061.96October 1, 2009 - 39
    
    
    
    
    
    
    8,000.00
    
    
    
    1,493.69
    
    
    
    249,555.65




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##### 



InterestRate
    
    
    PrincipalDate/Payment Number
    
    
    Payment
    
    
    7.00%
    
    
    BalanceNovember 1, 2009 - 40
    
    
    
    
    
    8,000.00
    
    
    
    1,455.74
    
    
    
    243,011.40December 1, 2009 - 41
    
    
    
    
    
    8,000.00
    
    
    
    1,417.57
    
    
    
    236,428.96January 1, 2010 - 42
    
    
    
    
    
    8,000.00
    
    
    
    1,379.17
    
    
    
    229,808.13February 1, 2010 - 43
    
    
    
    
    
    8,000.00
    
    
    
    1,340.55
    
    
    
    223,148.68March 1, 2010 - 44
    
    
    
    
    
    8,000.00
    
    
    
    1,301.70
    
    
    
    216,450.38April 1, 2010 - 45
    
    
    
    
    
    8,000.00
    
    
    
    1,262.63
    
    
    
    209,713.01May 1, 2010 - 46
    
    
    
    
    
    8,000.00
    
    
    
    1,223.33
    
    
    
    202,936.33June 1, 2010 - 47
    
    
    
    
    
    8,000.00
    
    
    
    1,183.80
    
    
    
    196,120.13July 1, 2010 - 48
    
    
    
    
    
    8,000.00
    
    
    
    1,144.03
    
    
    
    189,264.16August 1, 2010 - 49
    
    
    
    
    
    8,000.00
    
    
    
    1,104.04
    
    
    
    182,368.20September 1, 2010 - 50
    
    
    
    
    
    8,000.00
    
    
    
    1,063.81
    
    
    
    175,432.02October 1, 2010 - 51
    
    
    
    
    
    8,000.00
    
    
    
    1,023.35
    
    
    
    168,455.37November 1, 2010 - 52
    
    
    
    
    
    8,000.00
    
    
    
    982.66
    
    
    
    161,438.03December 1, 2010 - 53
    
    
    
    
    
    8,000.00
    
    
    
    941.72
    
    
    
    154,379.75January 1, 2011 - 54
    
    
    
    
    
    8,000.00
    
    
    
    900.55
    
    
    
    147,280.30February 1, 2011 - 55
    
    
    
    
    
    8,000.00
    
    
    
    859.14
    
    
    
    140,139.43March 1, 2011 - 56
    
    
    
    
    
    8,000.00
    
    
    
    817.48
    
    
    
    132,956.91April 1, 2011 - 57
    
    
    
    
    
    8,000.00
    
    
    
    775.58
    
    
    
    125,732.49May 1, 2011 - 58
    
    
    
    
    
    8,000.00
    
    
    
    733.44
    
    
    
    118,465.93June 1, 2011 - 59
    
    
    
    
    
    8,000.00
    
    
    
    691.05
    
    
    
    111,156.99July 1, 2011 - 60
    
    
    
    
    
    111,805.41
    
    
    
    648.42
    
    
    
    (0.01
    )475,805.41
    
    
    
    100,805.40Total Payments Made in 2006

    
    
    
    
    10,000.00Total Payments Made in 2007

    
    
    
    
    24,000.00Total Payments Made in 2008

    
    
    
    
    90,000.00Total Payments Made in 2009

    
    
    
    
    96,000.00Total Payments Made in 2010

    
    
    
    
    96,000.00Total Payments Made in 2011

    
    
    
    
    159,805.41Total

    
    
    
    
    475,805.41