Okay, call me archaic, but I do still use the ol Visual Studio 6...But, does anyone know how to create and use UserControls on Windows2000? All I really want to do is finish off this hex editor I started when I was running windows98, but I get this error when I try to add my hexEditCtl (obviously the most important aspect of the program...)I probably needn't state the exact error as I've found it comes up on any Win2k system I've used, but if anyone ran into this before and figured it out, your advice would be much appreciated...BTW - MSDN is sooooooo .Net oriented these days that I've had one hellofa time trying to find support for their 6.0 version (which doesn't require all those stupid components installed...)