Okay, in Virtual PC, I have installed Windows Whistler 2257, and it sits there at the bootscreen, no dots. It does boot into safe mode, but it sits there with setup window saying "Starting setup". It's barely even reading the hard disk. I installed it over Windows Whistler 2250 Pro, witch was also having the exact same problem. Why is that happening?
I suspect that you're going to have difficulties finding support for 10-year old beta software! You could always try VMWare or VirtualBox, which have always supported a wider range of clients thatn VirtualPC.
Windows Beta setups have a expiration date, no suprize that you have issues loading them. It's like saying "My illegal copy of XP stopped working" and looking for help to get around it. It's made not to work.