Does any body know what I need to break a movie up into smaller files so I can upload on the net.ie break a 800 mb clip into 16 50 mb parts. thank you

For P2P it's no longer necessary, as "chunking" with data verification is just a part of the protocols in all the various types of P2P now in popular use.

If you're thinking of uploading through alternate means with no such protections then you can add them yourself by using QuickPar to split the file and it will create about 80-100 MB of recovery files too.

It's a free download at http://www.quickpar.org.uk/