vista Build 5270 and virtual server 2005 R2

I just installed Vista Build 5270 an don that I installed Virtual Server 2005 R2. It looks like it works, though I cannot use the real network for my virtual machines. VS tells me it cannot connect to the virtual adapter. (This may be a LUA thing.) I will look into this and if possible come back to you. (no more XP for me on my desktop…..)