Windows 7: PC in cellar, TV in lounge...

TL;DR: Can the Linksys DMA2100 replace my Xbox as a Media Extender and does it work with Windows 7? Why has it been discontinued? Do people know something I dont?

I'm new to this whole media centre malarky, but have been playing around with it of late (after dumping Virgin Media) and am quite pleasantly surprised. I currently have a network connected PC with Media Centre running on it in the cellar and am using an Xbox as an extender in pipe the output from it into my TV.

I've just added a USB TV dongle to the media centre PC and really like the results so want set things up properly, ie take the Xbox out of the equation so that I dont have to boot it up to get media centre access, or listen to its fan droning on. I could also get rid of the Virgin Media V+ box which is currently supplying my terrestrial signals.

I cant afford the expensive of building another media centre PC. The one I'm using in the cellar is too big and noisy to move, and I also dont know if the TV aerial behind the TV is any good because I've never had to use it, although I could test that.

So, I was looking at the Linksys DMA2100. However it says in the Wiki page I was looking at that it has been discontinued. I can live with that if it works, but does it work with Windows 7 because the Wiki page I just read states that its been discontinued, and I only see Windows 7 support next to the Xbox?

Can anyone advise?

TIA