I got a 2m DVI-HDMI cable for $30 shipped. I don't know if your TV has digital inputs (DVI or HDMI), but that's the way to go. Otherwise, either you'll need a hardware transcoder, or an ATI card with a component adapter - they equip their DVI ports to also send out analog component signals, given the right adapter (dongle).
If your 5200 has DVI, I'd try the cheap route first -
www.atacom.com has cables. But remember, DVI and HDMI are digital. Component is analog. So unless you have a means of converting dig to an, then look out.
It's a slippery slope, as I have recently found out. I'm struggling with my ATI Radeon 9600 card and DVI-HDMI cable. Then we get into PowerStrip... Resolutions... Overscan... It's hard to be an early adopter...
G