You are lucky your Windows 7 64 bit setup works for you because mine is not. I have openned a ticket at e-onsoftware.  My HyperVue Network Manager gets stuck at "Sending scene".  I openned another thread hear on this problem. Everything looks okay and access between my main PC and the rendercow are very relaxed. Everything appears to be aligned with port number an build number but it won't work. The rendercow pc says its receiving but nothing beyond that.  My network switchbox shows heavy traffice and the main PC shows almost 100% network traffic so it is trying to send something but somewhere along the line something is wrong. Both PCs have the same accounts and passwords so access between the two is very easy. No problem browsing files between the two.