Your on the cutting edge of home pc entertainment, and you have an 18 year old telly????
You need help
Same thing happened to my brothers TV. It was a Sony Trinitron, which was just inside its 5year warranty.
So we called them out, and this TV repair dood came round and plugged this 'magic wand thingy' into a wall socket, and waved it wildy around the TV.
He looked so funny, I nearly shouted out 'Feel the Force Luke'
Anyway the screen went absolutely mental while he did this, but lo and behold it fixed it!
I think he said that is just needed de-magnetising or something. Even though I thought that it did that on every startup cos of the Buzz noise that can be heard.
Have a word with your local TV repair shop.
P3 800e @ 1 Gig with Alpha PEP66 (YS-Tech fan: bloody noisy)
256M PC133 Crucial
TurtleBeach Santa Cruz
Iiyama VisionMaster Pro450
Corsair PC2700 cas2