In that case, I am not really sure what's going on on both of your machines. Are you familiair with a tool called Fiddler?
http://fiddler2.com/fiddler2/
Try running your site with Fiddler enabled. It may tell you why some files don't work (e.g. it'll show you if you get a 404 or 500 exception for example).
Cheers,
Imar