Hitting any key in the instfiles page freezes under W2K

Windows 2000 has a bug which sends applications into an infinite loop when the dialog keyboard focus (set with WM_NEXTDLGCTL) is set to an invisible control and the user hits a key. That control must be in an internal dialog which is a child and control of the main dialog. The internal control must have the WS_EX_CONTROLPARENT flag.

More information at:

http://forums.winamp.com/showthread.php?s=&postid=2195737