Yep, your motherboard should have (unless it predates SATA) a floppy with all the neccesary drivers. During the Windows Install, for a few seconds you should see a prompt that says "press F6 to install mass storage device drivers" or something similar. You have to watch closely because it doesn't hang on this option.
Press F6, insert the disk, and everything should work fine. If you do not have the disk, you should be able to download the appropriate drivers from the motherboard manufacturer site, and then just copy them to a floppy.
Intel C2D E6320 / AMD Athlon X2 3800+
Gigabyte 965P DS3 / DFI nF4 Ultra-D
2GB OCZ Gold PC2-6400 / 2GB OCZ Gold PC4000
eVGA 8800GTS 320MB / eVGA 6800GS 256MB
150GB Raptor / 74GB Raptor
2x500GB / 320GB
OCZ GameXStreme 850w / OCZ StealthXStream 600w