So, I realized that, until Vista gets the updates and fixes that I need, I'm going to be keeping XP in reserve, currently for KotOR. I've already gone through the hassle of installing both operating systems on separate drives, and configuring the Vista bootloader (with EasyBCD) to look to C: for Vista and E: for XP. The problem is that XP uses a different bootloader than Vista and cannot boot from the new Vista bootloader. The best I can do, apparently, is have the Vista bootloader point to an XP bootloader when I choose the Windows XP option.
As of right now, I'm getting a missing ntoskrnl.exe error whenever I select the XP option. I've tried pointing the XP choice to drive C:, where the bootloading options might have been and all the sort. Basically, I need to get XP booting again, by installing an XP bootloader under the Vista one or just fixing the boot files on the E: drive.
If it helps:
Intel Core 2 Quad Q9450 2.6GHz @ 3.0GHz
6GB DDR2 SDRAM @ 960MHz
500GB SATA Hard Drive (C
120GB IDE Hard Drive (E
ASUS P5N-D nForce 750i SLI ATX Motherboard
Geforce 7950GX2 1GB GDDR3 PCI-Express Video card
Sound Blaster Audigy 4
750W Quad-rail power supply