I have 2 old PVR150 analogue tuner cards sitting in a drawer. Would you be interested in them? I have the remotes and the IR blasters. I would be willing to send them to you and if they work out buy me a beer sometime if not, throw them away. I keep thinking I'll sell them on ebay but in reality I never will. I bet they've been sitting for 2 years now.These ran great for me on XP. You can download the drivers from Hauppauge.
Beware though, setting up SageTV can be a terrible time waster. There's no telling how much time (and $) I have invested.