Booman
You games might be changing you graphics card settings I know from personal experience. The 64 bit chip has nothing to do with it I run a 64 and on C:drive I run XP Pro on D:drive I run XP 64 limewire work great on both. Best guess it is a graphics issue the link below may help.
http://www.gnutellaforums.com/showth...threadid=39600
If that doesn't do it post back it is possible you have a bad Java install.
AMD 64 3200+ OC 2.3Gh/z
EVGA e-Force NVidia 6200
ASUS A8N Deluxe
4 - corsair 512 registered 2GB
2 - Fujitsu 74GB Ultra 320 15K RPM SCSI 0-RAID
1 - WD 120GB
C:/ Windows XP PRO
D:/ Windows XP64 Beta