You can write a simple code for the .wmv that will let you stream it; ask any web design, computer science enthusiast and they can help you. Alternatively, put the .avi file into an NLE like Final Cut Pro and render out again in .mov.
Thanks.
What I did: Loaded the 1.5GB AVI to Movie Maker, It converted the movie to WMV
65MB. Loaded it to YouTube and linked to my site.
I feel so clever...