Before you think this is a Windows problem, I have done some testing and playing around. I gathered this was a Motherboard problem after two days.

Now, the problem in detail is, I put everything together, correctly as I can tell. Despite the Motherboards crappy IDE setup, I managed to get things hooked up right. I put the Windows CD in, restarted, and the Windows install process started with the blue screen with the grey bar at the bottom and the various parts being installed. Then comes the screen where it says hit Enter to continue, hit R to do a repair install, or hit F3 to exit.

I hit enter, then it goes to the "Please Wait..." screen and hangs.
Nothing happens then.

I restarted, tried again, and it hanged at the Please Wait screen. I left it on over night and nothing happened.

So the next day I tried various things, including different harddrives (both SATA and IDE) moving the memory stick, a different memory stick, a different optical device, even installing drivers (through the F6 part in the Windows install), and flashing the BIOS with a new version. I also looked around the ASUS forums for this problem but there was no solution as far as I could see.

As a side note, I took one of the IDE harddrives I was using with the ASUS and hooked it to a different system, and with the same Windows disk, installed the OS on the harddrive in a half-hour.

I figured the Motherboard was defective, and I will be trying to return it soon, that is, if no solution is found.

Setup:
Motherboard: ASUS P5LD2
Processor: Pentium D 930
Memory: Corsair 1gig (single stick, I have a second stick but I don't have it hooked up yet)
Harddrives: Western Digital 160 gig Sata or Seagate 400 gig ide harddrive (I've tried both but only one at a time)
Video Card: ASUS EN6600/TD/128 Geforce 6600
Also: A Sony Floppy, CDRW, Benq DVDRW (not hooked up), three more harddrives from old computers that will be hooked up if I ever get this computer going, and a sound card.
Finally: PS/2 Keyboard, USB mouse in a PS/2 adapter