Fanvid help?

[Mew]

A few months ago, I made a fanvid, for Good Wilt Hunting, that I was very proud of. However, when I saved it as a wmv (it was made in Windows Movie Maker), there was a green bar along the bottom that wasn't in the original.

I just tried uploading it on Youtube, but it still has the bar. Anyone got any ideas on how to get rid of it?

EDIT: A few weeks ago I ripped the Explorin' Lauren part from Bloo Tube, for my own enjoyment, and after saving it as a WMV, in Media Player, it showed up with a green bar, like my GWH video.