I am using this in Microsoft Virtual PC, which emulates an Intel Pentium II processor, and an Intel 440BX chipset. For updates, I have installed Service Pack 6a,IE6 SP1 + updates and the IE6 update Rollup. I have not yet tried the Flash spoofer, but I plan on doing it soon.
UPDATE: I installed Flash 7.0.73, and Firefox 22.214.171.124pre (firefox 126.96.36.199 with some bug fixes). I applied the modifier to Flash 8, and although it doesn't crash anymore, it refuses to play, and when I right-click on the video, it says (About Macromedia Flash Player 7.) Perhaps youtube isn't fooled by the file anymore.
UPDATE 2: I copied the modified Npswf32.dll modified file to the Firefox plugins folder, so youtube does think I'm using Flash 8.0.42. Videos play but I can't seem to fix the problematic formatting, even though there is an included file for that. I will report again if I fix this problem.
I also used the modified Flash file for Opera 10.63, and now Youtube runs flawlessly in Opera 10.63. I am going to uninstall/remove Firefox since I have no use for it anymore.
This thread is closed.
Edited by ironman14, 23 December 2013 - 08:08 PM.