[Touch Diamond, MDA Compact IV General] MRE-net:
I changed all the paths to the save folder for every camera option.

Here is an export of my setting taken from my registry:

As you can see I changed all the paths for P1 til P10

Savefolder to internal storage\my documents\my pictures is \intern geheugen\mijn documenten\mijn afbeeldingen

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\HTC\Camera]
"Path"="\\Windows\\Camera.exe"

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\Image]
"GpsSaveFolder_0413"="My POI"
"SaveFolder_0413"="Mijn afbeeldingen"
"EnableQuickSendContact"=dword:00000001
"EnableEncodePortrait"=dword:00000000
"SharpnessDegree"=dword:00000000
"EnableResizePic"=dword:00000000
"EnableStamp"=dword:00000000
"GpsPrefixString"="GPS"
"SupportDataAndTimeStamp"=dword:00000001
"PrefixString"="IMAGE"
"JPEGQuality"=dword:00000001
[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

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\Common]
"RotateScreen"=dword:00000000
"IconID"=dword:00000000
"ShowPromptWord"=dword:00000000
"ActiveCameraID"=dword:00000001
"SleepDuration4Streaming"=dword:000000C8
"Action4Streaming"=dword:00000000
"SleepDuration4WMP"=dword:000000C8
"Action4WMP"=dword:00000000
"RCDLL"="CameraRc.dll"
"ContinueKeyInterval2"=dword:00000032
"ContinueKeyInterval"=dword:00000000
"SourceOfSnapSound"="\\Windows\\Snap.wav"
"EnableFrameRateInfo"=dword:00000000
"ProMemLimit4Recording"=dword:00300000
"ImgAvailableCounter"=dword:00000001
"FlashLight"=dword:00000000
"VdoAvailableCounter"=dword:00000001

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\Captparam]
"SportSpeedFast"=dword:00000190
"SportSpeedMedium"=dword:000002BC
"SportSpeedSlow"=dword:00000384
"OverlayRatio"=dword:00000028
"AutoStitch"=dword:00000001
"PanoramaShoots"=dword:00000003
"SnapDirection"=dword:00000000
"Volume"=dword:00000005
"FES"=dword:00000000
"DefSportInterval"=dword:00000002
"SportCount"=dword:00000001
"DefBurstInterval"=dword:00000002
"DefBurstCount"=dword:0000001E
"CapKeyDelayTime"=dword:000005DC
"EnableCapKeyDelay"=dword:00000000
"EnableDateFolder"=dword:00000000
"CaptureTimer"=dword:00001388
"SaveTheSameName"=dword:00000000

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\Captparam\ExifInfo]
"Model"="HTC Touch Diamond P3700"
"Make"="HTC"

[HKEY_LOCAL_MACHINE\Software\HTC\Camera\General]
"EnableStorageCardPlugInMsg"=dword:00000002
"EnableActionScreen"=dword:00000001
"ShowUIAfterLaunchCamera"=dword:00000000
"EnableNaviShootOption"=dword:00000001
"UseNewDeleteString"=dword:00000001
"AniColor"=dword:00000000
"EnableNewPromptStr4InnerStorage"=dword:00000001
"CurCameraUIOrientation"=dword:0000010E
"Timer4ShowCamMode"=dword:000007D0
"DynamicOsdOrientation"=dword:00000001
"SystemBusyPeriod"=dword:0000D6D8
"Timer4OsdShowMode"=dword:00001770
"StorageSuggestion"=dword:00000001
"TextAnimationSpeed"=dword:00000003
"EnableDCIM"=dword:00000001
"ShootOption"=dword:00000000
"ChangeOsdOrientation"=dword:00000000
"MacroMode"=dword:00000000
"MaximalGPSInitialTime"=dword:00000708
"PositionMaximalAge"=dword:00000002
"MeteringMode"=dword:00000000
"EnableGrid"=dword:00000000
"DisableOsdShowMode"=dword:00000001
"CountdownTimer"=dword:00000000
"FilenameType"=dword:00000000
"KeepBacklight"=dword:00000001
"TimeToEnterSuspend"=dword:00000078
"DisableShutterSound"=dword:00000000
"Storage"=dword:00000003
"EnableAutoFlicker"=dword:00000001
"FlickerSelection"=dword:00000000