(Duh!) Thanks, I was always running themed so I never hit the error 
I have a weird bug when running XP themed on an HP machine with Nvidia drivers, for some reason, alpha information is lost on the resource bitmaps when loaded and the stored gdipImage on the ImageList is empty, but debugging shows that all created handles are valid.
I'm not sure if it is Driver specific but apparently, even classic mode yields the same problems. Let me know if anybody experiences the same thing.
But the machine at work has no problems