make sure it works with regular xp (if thats what you are getting), but the tuners listed here:
http://www.windowsmarketplace.com/Re...aspx?collID=98
are some of the best ones out there
50$ is on the low end for a tv tuner, just keep that in mind
http://www.windowsmarketplace.com/pr...1207757&stext=
this is one of the best out there IMO, with dual tuners and good quality, but it is more expensive