Video Widescrean HD for Sony Vegas and WMM

I've found some pretty helpful videos on how to change settings so you get widescrean on youtube :D
Sony Vegas (I've tried this out - useing sony vegas 8 plat. and it works!) : http://www.youtube.com/watch?v=tCVPiYzaCFA&feature=channel_page

Windows Movie Maker (I haven't tried this out yet - mainly cause I don't use WMM anymore and I'm on the wrong computer) : http://www.youtube.com/watch?v=hEfduK29sMw&feature=channel_page

I hope this helps ^^