Well many of the dev team say that they don´t want to develop a windows 7 version of mediaportal because windows 7 is still in beta state. But the problems with the tv-server are caused through a bda architechture change that allready took plase in windows vista with the tv pack 2008. If´ve been tesing and reading much in the last two month since i started using windows 7 and so i found some informations on the new BDA 1.3 system. As long a i can see there aren´t any changes to expect because BDA 1.3 is a peace of Vista TV Pack 2008 and that is allready final. I would recommend to start developing a Windows 7 / Vista TV Pack Version of the tv-server. MediaPortal itselfs doesn´t need any modification to run on Windows 7 only the TV-Server has a problem to start a new subchannel on dvb cards. By the way recording and watching the same channel or recording and watching multible channels on analog cards works fine. If i would be able to develop such a version i would but my coding experience stopped with delfi and basic 
But iw ould test anything to help improving mediaportal on windows seven and the vista tv-pack 2008
But iw ould test anything to help improving mediaportal on windows seven and the vista tv-pack 2008