Okay, I got the boot device working, and I now have Vista installed and working on my computer! Hurray! I have successfully built my own computer, and everything works!
EDIT: I just found out that the wireless network adapter I use doesn't have 64-bit drivers...
So anyone know of a Vista 64-Bit Wireless Network Adapter? Right now I have a Linksys Compact Wireless-G USB Adapter, but Linksys doesn't make 64-bit drivers. Preferable another USB adapter, I prefer to simply plug it in and use it rather then having to install it in the computer. Downloadable drivers are okay as well, since I can DL it on another computer and just transfer the drivers over on a flash drive.