because i did not see this program here i thought i post it.

;This is the cmd file i use

REGEDIT /S registreer.reg
start /wait thumbs6.exe /silent
EXIT

;This is the reg file i use - replace xxx whit your registration

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.]

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus]

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0]

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\DatabasePath]
@="C:\\Program Files\\Thumbs6"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\ProfilePath]
@="C:\\Program Files\\Thumbs6"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\SeparateUserPrefs]
@="0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\Usercode]
@="xxx-serial-xxx"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\Usercount]
@="1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\Username]
@="xxx-name-xxx"

it is not spectacular but just handy that you not has to find it out yourself

It's, also, useful to re-use your Thumbs.ini because it keeps all your settings. It's found here: C:\Program Files\Thumbs6\Thumbs.ini

Also, it could be sufficient to have your reg file with these entries only:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\SeparateUserPrefs]
@="0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\Usercode]
@="xxx-serial-xxx"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\Usercount]
@="1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Cerious Software Inc.\ThumbsPlus\6.0\Username]
@="xxx-name-xxx"

There are repeated entries under: HKEY_CURRENT_USER\Software\Cerious Software.... I don't know if they should be imported as well.