HCPC - will it drive my plasma?

I am about to build my first HCPC around an SB65 shuttle with Radeon 9600 etc. primarily to enjoy WMVHD movies as I already have a Denon 2800 DVD for playing all manner of silver disks.

Doen as much research as I can but cannot decide whether the whole project is worth while as my plasma is fairly old.

Whilst it has 15 pin RGB and Component video support I am not sure whether I will be able to get a true 'HD' picture i.e. better than my current 575p through componrent from my Denon?

Also if I do build the HCPC is the resolution of the plasma good enough to give me a true HD picture. Its native resolution is 1024x1024?

Any help and guidance gratefully recieved -thanks