DIY DVR

Hey people,

Just wondering if any of you have experience with building a dvr? Saw this:
http://lifehacker.com/165963/hack-attack-build-your-own...
I live in Norway and i was thinking of using my old pc, it has a video capture card and is capable of running xp. The only thing i need to buy is a cheap case.

Had a quick look.

http://www.ebuyer.com/product/150275
http://www.eclipsecomputers.com/product.aspx?code=CA-SO...
http://www.eclipsecomputers.com/product.aspx?code=CA-XO...
http://www.microdirect.co.uk/Home/Product/40648/Antec-F...

The last one looks great but with a price tag of a £122, it's not cheap but has a remote. Not sure if i can get a cheap one with a remote? I think i might have one with my tv card.

Also software?
http://www.mythtv.org/
http://www.gbpvr.com/

Like i said this is all new to me so any input would be great  

Tim