Happy & sentinel,
I can tell you 100%, that is is not a video card driver issue - When I was at Paritech I spent many hours with Jim Berg who loved 6.52 trying to get it work on XP, and I basically rebuilt his PC many times to get it working, but it did not work very well.
So all I can say is, if your 6.52 is working on XP, be thankful, but when it fails; its time to upgrade, as it will be the only way to fix it.
This issue reminds me about the new version of Symantec Internet Security 2006 - They will only work on Windows 2000 and XP now, you cant get the older version working on older systems any more, but thats not what we are here for.
Good luck