Hello, i've decided to rebuild, and reinstall the computer that didn't work for some reason, but the only OS that would work with the m/b drivers is Windows 2000/XP

However, I've managed to install Windows NT4.0 Workstation with my old graphics card, Ultra ATA/133 PCI IDE Bus controller card to add more HDDs, DVD/CD-RW Combo Drive from Lite-on Tek, 3.2GB HDD, 6.4GB HDD, 20.0GB HDD, ???MB/GB HDD, Creative 128-bit PCI Sound card*, and the Realtek RTL 8029AS 10mb Ethernet ready PCI Card*.

m/b: ASUS with MSI Technology, AMD Athlon 64 Processor 3200+ (2.0GHz), 448MB RAM + 64MB RAM Share, or 1GB RAM (at 400MHz DDR RAM) stick

1x PCI-E 16x Graphics card

3x PCI Slots for additional devices

*Subjected to only the Ethernet card, and using the RealTek AC'97 Sound for Windows NT4.0, 2000, or 2003

Please help me decide of which OS is right for this PC with the PowerSpec Case that takes a mATX m/b

I would say that the choice of operating system would lie solely in what programs you are looking to run, and what they require/work best in.