TweakAll 3.0 will work on all the following Operating Systems:

• Windows 95
• Windows 98
• Windows 98se
• Windows ME
• Windows NT 4.0
• Windows 2000 Pro
• Windows XP Home and Pro

TweakAll 1.2.3 will only work on all the following Operating Systems:

• Windows 95
• Windows 98
• Windows 98se