Here I will only host Windows 2000 (NT 5.0) and Windows XP Counter parts. All older Versions of NT and server editions may be added later.
Windows 2000
Windows 2000 SP4 ISO
No Key should be needed on a fresh install. If you choose to upgrade here is a key that should work: Q66X2-WWGWX-DDD4P-4XMB2-HVY7J
Useful information for windows 2000 :
After Fully Updating through official channels you may now
Windows XP
Windows XP SP3 ISO x86
Product key:
V2C47-MK7JD-3R89F-D2KXW-VPK3J T7C4Q-47VGM-R7J6B-VPJ84-JPJ93
Useful information
Check out the Windows Themes section for was to customize your XP experience!