Oklee-dok,
Here is the simple batch file to close GBPVR and open (in my case) Sage:
::First command stops gbpvr
TSKILL GBPVR
:
econd command starts sage
::the file refered to is a shortcut I created on c:
start C:\StartMVPClient.lnk
::close the command window and be done with it
exit
Create this in Notepad, save file with .bat extension and Bob's your uncle (sorry if you know this kind of stuff, just thought I would include it and save time in case you don't). When using TSKILL command, you must know the name of the running process (which you can get from the Task Manager). The shortcut, you can name whatever you want.
To start and stop services use NET START "
nameofservice" and NET STOP "
nameofservice" (you can get the name of the service from the list of windows services).
To access your new .bat file from GBPVR:
>Open config
>Choose plugins tab
>On the right under Custom Tasks click Add
>Give the button a name
>Enter the path to your .bat file in "Executable" field (it will only look for .exe if you use browse)
>No arguments needed
>Give the button a description (which will also appear in your GBPVR menu).
>Click OK
Sorry if I provided too much or too little information . . . it's hard to gauge that kind of stuff in a forum.
Let me know if I missed anything here.
DISCLAIMER - I am not a programmer but just an average moron. There may be better ways to accomplish this task and I take no responsibility (but would be quite surprised) if your motherboard bursts into flames or your computer is otherwise  damaged beyond recognition as a result of this simple batch file. Â