Hello. (Yes this is my frist post here

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I just assembled a new system for myself. Got everything loaded but am running into a problem with the 7.3s.
Funny thing: I get everything installed, head to ati's website and boom: Catalyst 7.3. Ok, installed. Install went...ok...didn't notice anything unusual. Also its been a while since I used ATI (been using nVidia graphics). Restarted: BOOM. BSOD pertaining to my ACPI. Said the BIOS isn't complient. Oh kay...rebooted and it lets me in. Fine, everything works...except when I first loaded the CCC, I noticed it looked rather...plain. It wasn't loading the skins. I ignored it for now and went on.
System worked fine but still would BSOD sometimes on reboot. I finally got fed up and decided to uninstall and reinstall. I even used the last free version of Driver Cleaner Pro to remove the rest of the drivers and stuff (I had MOM errors when I tried a 2nd install). Now I installed for the 3rd time. Cannot start the Catalyst Control Centre: Host application has encountered a problem and needs to close. We are sorry for the inconvenience.
HELP! What do I need to do!! This is happening in Windows XP SP2 with all the latest updates on a Gigabyte GA-M57SLI-S4 v1.1 Bios F7 with Corsair XMS Twin2X2048-6400C4. Currently the memory is at default JEDEC settings (I thought the BSODs were because I set the memory to what it should be: 4-4-4-12 at 2.1v although had to do 2.0v). Video card is the ASUS EAX1950Pro.