A new patch has been released, and is confirmed to be working, that, amongst other things, allows Thief 2 to:
+ Install much easier and play without problems (no speed up/slow downs, no problems playing the FMVs, etc), + Use widescreen and/or higher resolution modes, + Scales the HUD properly on widescreen mode, + Can now use the mouse wheel up and down, and define them in the game's menu, + Can switch from map screen to game screen and vice versa without changing resolution, + Makes using ladders easier,
I've been playing since the patch came out (was at my wit's end because I couldn't get Thief 2 to work and had loved Thief 1 so much). Great game so far, great patch. They even got the movies working, which I never could in Thief 1.