**Exhibit 24.1**

**POWER OF ATTORNEY**

KNOW ALL PERSONS BY THESE PRESENTS, that each personwhose signature appears below constitutes and appoints Ralph Quinsey andRaymond A. Link, jointly and severally, his attorneys-in-fact, each withthe power of substitution, for him in any and all capacities, to sign anyamendments to this Annual Report on Form 10-K and to file the same, withexhibits thereto and other documents in connection therewith, with theSecurities and Exchange Commission, hereby ratifying and confirming all thateach of said attorneys-in-fact, or his substitute or substitutes, may do orcause to be done by virtue hereof.

**Pursuant to the requirements of the Securities Act of1933, this Registration Statement has been signed by the following persons in thecapacities and on the dates indicated.**
|                        | **Signature** | ** **                                   | ** ** | ** **           | **Title** | ** ** | ** ** | ** ** | **Date** | ** ** |
|------------------------|---------------|----------------------------------------------|------------|----------------------|-----------|------------|------------|------------|----------|------------|
| /s/  RALPH G. QUINSEY  |          | President and Chief  Executive Officer       |       | March 15,  2005 |
| Ralph G. Quinsey       |          | (Principal Executive Officer)                |       |                 |
| /s/  RAYMOND A. LINK   |          | Vice President, Finance  and Administration, |       | March 15,  2005 |
| Raymond A. Link        |          | Chief Financial Officer and Secretary        |       |                 |
|                   |          | (Principal Financial and Accounting Officer) |       |                 |
| /s/  STEVEN J. SHARP   |          | Chairman of the Board                        |       | March 15,  2005 |
| Steven J. Sharp        |          |                                         |       |                 |
| /s/  FRANCISCO ALVAREZ |          | Director                                     |       | March 15,  2005 |
| Francisco Alvarez      |          |                                         |       |                 |
| /s/  PAUL A. GARY      |          | Director                                     |       | March 15,  2005 |
| Paul A. Gary           |          |                                         |       |                 |
| /s/  NICOLAS KAUSER    |          | Director                                     |       | March 15,  2005 |
| Nicolas Kauser         |          |                                         |       |                 |
| /s/  WALDEN C. RHINES  |          | Director                                     |       | March 15,  2005 |
| Walden C. Rhines       |          |                                         |       |                 |
| /s/  EDWARD F. TUCK    |          | Director                                     |       | March 15,  2005 |
| Edward F. Tuck         |          |                                         |       |                 |
| /s/  WILLIS C. YOUNG   |          | Director                                     |       | March 15,  2005 |
| Willis C. Young        |          |                                         |       |                 |

 

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