WHS Webguide4 streaming help

[Schuey07]

Hello all

I have built a new WHS machine

Gigabyte pm61m s2
AMD 3800 64 athlon AM2
1 GIG Ram
3 x 320 sata
RC1, Webguide4, power DVD, AC3 Filter

Network of 4 machines 2 x MCE 2005, 1X Vista home Premium and 1 X XP Asus laptop. These all see and play all files no probs.

The WHS funtions perfectly No issues there.

Web guide 4 beta has streaming capabilities, I can see all files DVDs; DVRMS, AVI, etc

But I cannot stream, within IE7 I get a WMP connection error, Check proxy settings. this is on LAN or WAN.

Any Ideas

Cheers