Windows 7 Beta P2P File Sharing

I'm running Windows 7 Beta x86 and have been unable to get any sort of filesharing program to work. Whether it's bitcomet, utorrent, limewire, or even worldofwarcraft downloader. I've checked the obvious settings such as enabling/disabling firewall, toggling network and file sharing options, and checking for any discrepencies in system events.
Also it can not be my router or isp because I use Vista 32 bit on another computer in the next room.
Does anyone have any idea what I might be missing?

Did you mean all the file sharing apps worked fine on Vista? This may not make sense but might be worth a shot:

Have you tried forwarding the ports (by logging into your router/gateway) that those apps use?

I have build 7000 and thought that it was part of microsoft's escrow phase of development. Perhaps I can get my hands on 7100 I hear it's been leaked.

I've tried ported fowarding and it doesn't seem to work either.
I will get a copy of a later build and see what happens.

No 3rd party firewalls you may have overlooked?

and you can get on the internet?