hey man
i love the site and this tutorial is awesome
I have completed up to part 8 and i am looking foward to more of it
I would also suggest the divx codec which can be downloaded here:
http://www.divx.com/divx/windows/
you can download a free version or the pro which cost money so i suggest just going with the free one. Divx gives great quality with very small file size so go with it