Windows 7 Internal SATA drive not found in Windows 7

Hello, I'm new here. I recently installed Windows 7 RC 32-bit on a Seagate 300GB IDE drive. I also have XP on a separate IDE drive. I am able to dual boot successfully. My problem is that I have a Seagate 1.5TB SATA drive that I can use in XP, but W7 does not see or recognize it. I'm assuming a driver issue is the culprit. My motherboard is a GA-7DXR with an AMD 3000+ chip. I am also running with 2.5 GB of RAM. If there is other info anyone might need to diagnose this problem, I'll try to get it for you. Thanks.

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