Hi Matt,

The file you've downloaded should have an "iso" extension, not "mfs". Did you get that number by running a md5sum check on the file? This page provides some good information on how it's done:

http://www.openoffice.org/dev_docs/using_md5sums.html

The result should be the same as in this file:

http://minnie.tuhs.org/TiVo/files/im...050524.iso.md5

Cheers, Dave.