help setting up my hard drive

I recently built my new computer, and while rather proud of myself, i'm having some troubles setting it up. upon running my windows XP installation, i was confronted by the messege that no hard drive can be found. My friend told me that I can find the software to install it on my motherboard disk and save it to a floppy, but i can't seem to find anything that might work. my motherboard is an Nforce4 and the hard drive is a western digital WD800