Broken Appearance

[Nameles]

I installed Server 2003 and followed the steps in the guide. I installed the hacked uxtheme.dll and I wanted to get a new visual style, so I downloaded the top ranked one from themexp.org and it broke the Appearance tab in Display properties.

By broke I mean it will either not load (and close the Display properties), cause an error (Don't remember what exactly, but it refered to the path to the theme file), and now a rundll32 application error

I'm wondering if I reinstall the old uxtheme.dll or use TweakNT to set my computer to a workstation would help.

Anyone have any ideas?