[Touch Diamond, MDA Compact IV General] MRE-net:
These are my values in the registry. With these all my photo's and video's are saved to my internal storage (4GB) card which is Intern geheugen in Ducth.

Be aware that if you edit these paths with a regedit tool on your diamond that you use only ONE backslash !!!! So if you edit, edit it like:

\Internal Storage\My Documents\My Pictures

The beneath code is an export of my reg keys and when you open it with notepad it shows TWO backslashes like \\Internal Storage\\My Documents...

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P9]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn video's"
"Enable"=dword:00000001
"2ndCamSupportCaptSize"=dword:00000008
"2ndCamCaptSize"=dword:00000008
"MainCamSupportCaptSize"=dword:00000008
"MainCamCaptSize"=dword:00000008
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000030
"CaptureFormat"=dword:00000010
"Property"=dword:0000083A
"CaptureType"=dword:00000009

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P6]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn afbeeldingen"
"Enable"=dword:00000001
"2ndCamCaptSize"=dword:00000040
"MainCamSupportCaptSize"=dword:00000050
"MainCamCaptSize"=dword:00000040
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000002
"CaptureFormat"=dword:00000002
"Property"=dword:00044199
"CaptureType"=dword:00000006

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P8]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn afbeeldingen"
"Enable"=dword:00000001
"2ndCamCaptSize"=dword:00000040
"MainCamSupportCaptSize"=dword:00000050
"MainCamCaptSize"=dword:00000040
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000002
"CaptureFormat"=dword:00000002
"Property"=dword:00084199
"CaptureType"=dword:00000007

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P1]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn afbeeldingen"
"MainCamCaptSize"=dword:00000400
"2ndCamCaptSize"=dword:00000040
"Enable"=dword:00000001
"2ndCamSupportCaptSize"=dword:00000050
"MainCamSupportCaptSize"=dword:000006D0
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000002
"CaptureFormat"=dword:00000002
"Property"=dword:000019FD
"CaptureType"=dword:00000000

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P10]
"Enable"=dword:00000001
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn POI"
"2ndCamCaptSize"=dword:00000040
"MainCamSupportCaptSize"=dword:000006D0
"MainCamCaptSize"=dword:00000400
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000002
"CaptureFormat"=dword:00000002
"Property"=dword:018011DD
"CaptureType"=dword:00000008

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P2]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn video's"
"Enable"=dword:00000001
"2ndCamSupportCaptSize"=dword:0000003A
"2ndCamCaptSize"=dword:00000010
"MainCamSupportCaptSize"=dword:0000003A
"MainCamCaptSize"=dword:00000010
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000030
"CaptureFormat"=dword:00000010
"Property"=dword:0000083A
"CaptureType"=dword:00000001

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P3]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn afbeeldingen"
"2ndCamCaptSize"=dword:00000040
"Enable"=dword:00000001
"MainCamSupportCaptSize"=dword:00000050
"MainCamCaptSize"=dword:00000040
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000002
"CaptureFormat"=dword:00000002
"Property"=dword:00200099
"CaptureType"=dword:00000005

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P4]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn video's"
"RecLimitSize"=dword:000000F0
"Enable"=dword:00000001
"2ndCamSupportCaptSize"=dword:0000000A
"2ndCamCaptSize"=dword:00000008
"MainCamSupportCaptSize"=dword:0000000A
"MainCamCaptSize"=dword:00000008
"EnableRecLimit"=dword:00000001
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000030
"CaptureFormat"=dword:00000020
"Property"=dword:0002083A
"CaptureType"=dword:00000004

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P5]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn afbeeldingen"
"Enable"=dword:00000001
"2ndCamSupportCaptSize"=dword:00000010
"2ndCamCaptSize"=dword:00000010
"MainCamSupportCaptSize"=dword:00000010
"MainCamCaptSize"=dword:00000010
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000002
"CaptureFormat"=dword:00000002
"Property"=dword:001008FD
"CaptureType"=dword:00000003

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\P7]
"SaveFolder"="\\Intern geheugen\\My Documents\\Mijn afbeeldingen"
"Enable"=dword:00000001
"2ndCamSupportCaptSize"=dword:00000050
"2ndCamCaptSize"=dword:00000040
"MainCamSupportCaptSize"=dword:00000050
"MainCamCaptSize"=dword:00000004
"EnableRecLimit"=dword:00000000
"RecLimitSize"=dword:0000005F
"RecLimitedType"=dword:00000000
"EncodeFormat"=dword:00000002
"CaptureFormat"=dword:00000002
"Property"=dword:004048E9
"CaptureType"=dword:00000002

Other free advice ;) is to set the default path of MMS attachments to your internal storage. This can be done in the reg key below, also enter it on your diamond with ONE backslash !!!!

[HKEY_LOCAL_MACHINE\Software\Arcsoft\ArcSoft MMS UA\Config\Folder]
"VideoPath"="\\Intern geheugen\\My Documents\\Mijn video's\\"
"PicturePath"="\\Intern geheugen\\My Documents\\Mijn afbeeldingen\\"