Let me start off by saying I am pretty much a "noob" at all this. I use a Hauppauge HD PVR to record PS3 gameplay, once I record for lets say a hour or two I then convert the file. To be honest I have no idea why there is a need to convert it, I don't even know what it converts it to. Anyways I used Windows Live Movie Maker and I would always click Publish Move- Save in HD and when I upload it onto youtube it looked great. Well Windows Movie Maker doesn't have a lot of editing stuff so I bought this but I am having a lot of trouble uploading a good looking video. I followed this guide http://eugenia.gnomefiles.org/2007/11/09/exporting-with-vegas-for-vimeo-hd/ so I could upload in HD. I rendered it in WMV and then I upload it onto youtube. The current videos i'm uploading using Vegas are okay but still don't look great. When I used Windows Movie Maker they looked really good. For example here is one of my vegas videos (watch in 720)

If anyone can help me out, it'd be much appreciated!