320 GB HD problem

I just bought a 320 GB HD from Western Digital. I have Windows XP with SP2, with EnableBigLba (value 1), and an updated BIOS that supports hard drives of greater than 137 GB, but Windows still only recognizes 137 GB as my drive's size. The WD software will recognize 320 GB if I boot to the CD but not if run in Windows and if run from CD, the drive doesn't work after rebooting. My startup screen shows the right size for the drive, so what is going on? Is it Windows and I need to roll back and reinstall SP2? Or, is the only option at this point to buy and use an Ultra ATA/133 PCI controller card?

The chipset (Intel 810 for instance) is what the problem is. The chipset, if older, will not support that size of drive. Windows it self will support a ton of space.

My mobo(ASUSP4S533) has a SIS 645DX chipset. Do you know if that doesn't support the large drive?

I found out that it doesn't, so I just uninstalled the chipset's IDE drivers and let Window's IDE drivers take over. It worked and the drive is fine now.