Edit - Problem solved, nevermind!

[Red Storm]

I'm starting to run out of disk space, so I bought a 250GB Seagate to go along with the one I have right now (same HDD). I took off the jumper, connected the cables (P5B-E motherboard), and when I booted up I could see the drive in the bios. Device manager shows the drive as well, with nothing wrong. But I can't get it to show up in my computer. What is the problem here? Oh, and this is with Vista Ultimate x64.

Edit: I totally forgot about Administrative Tools. Problem solved.