Windows NT 4 workstation has become very problematic for me, so I'd like to _completely_ remove any existence of it from my hard drive and replace it with another OS (likely win98 since I already have a license for it). I've tried installing win98 over top of winnt, but it won't let me do it since its not an "upgrade" disk. How do I _completely_ remove WinNT from my machine? I want to be as clean as possible. Much obliged.