This is the main prodedure:
Open games.exe in a hex editor, find:
d3d9.dll
Replace it with:
v3d9.dll
then rename dgVoodoo2’s d3d9.dll to v3d9.dll and put it in C:\Windows\SysWOW64.
Some games require additional files, if the above doesnt work, search the game driectory for other files containing d3d9.dll, replace their content like above.Note:Some games wont still not work this way, Avatar for example.
BTW Ghost Recon should be DX8, only D3d8.dll that you need to put in the games folder where the games exe is located and use the vorpx DGVoodoo2 base profile.If that doesnt work, try other DGVoodoo2 profiles.
http://rjkole.com/gamestuff/engines/index.php?selengine=DGVoodoo2