RE; ATI 8500 LE video issue

Hello,
I just upgraded my system to a P4 and I've been installing and playing
some of my games only I have noticed the display seams to be darker than
when I was running the CUSL2-C. I've even had to turn up the gamma on a few
of them to see what's going on. Any ideas? I've listed the new system spec's
before in the group but I will add here for reference. I ran cpu-z on it and
can foward the info if needed.
InWin 500A case
P4 3.2 Northwood (overclocked to 3.6)
Kingston 1Gb (2X512)
530 Watt Power supply
Asus P4C800-E Deluxe
Vantec CPU cooler -w- artic silver paste
Maxtor 40 GB IDE (not sata)
Running Windows XP Pro -w- sp1 and current patches
Dx9a installed
Maxtor 120 GB (not sata)
Western Digital 30 GB
LG CD-RW
USB 4 port hub -w- HP scanner and HOTAS, Webcam and printer to motherboard
USB ports. Webcam isn't showing video but I think it's the cam as all other
usb items are working. I don't think it matters but I have no internal modem
installed, the parallel and serial ports are turned off. Any idea what a
good working CUSL2-C -w- PIII 1GHz, 512 PC133 SDRAM (Micron brand) and Sound
blaster live or Audigy Gamer card is worth? I'm considering putting it on
eBay. On a side note: I plan on upgrading to two SATA HDD's to the above
after the first of May.
ME