I use, to shape my windows into non-regtangular shapes, the THEMA Polyform control (http://www.geocities.com/SiliconValley/Haven/2118). It is an excellent control, but I noticed that it does not clip windows correctly in Windows NT 4.0 or 2000 (I'm running 2000 Pro). However, I know that it can be done in 2000, because the CD player in it has rounded edges. This part of my program is also its starring feature! Arg! Any help?