^He would probably be better off with a e7200 or a q6600 because he still needs OS, monitor, TV tuner, mouse, and probably a bigger hard drive if he plans on recording videos.
Chickfilafan, does your TV have HDMI? The HD 4850 comes with a DVI to HDMI converter so you can use that to connect to your TV if it has an HDMI port.
As for recording things you will need a TV tuner, Hauppage make good TV tuners and they are not all that expensive.
If you are planning on regular not HD recording this card should be fine: Newegg.com - Hauppauge WinTV-PVR 150 MCE FM 1042 PCI Interface - TV Tuners & Video Devices