I got a 1ghz T-bird and Abit KT7-RAID last month, I got it overclocked to 1100mhz now. I haven't unlocked it yet, I am waiting on a copper shim and frost spray from overclockers hideout. As of now my temp is 84F idle, 104F full load. I use the retail heatsink/fan, 2 case fans, a card cooler, slot fan, and twin turbo fan.
From what I have read recently the best heatsink is the hedgehog. But if you want cheap, then the silver orb is good, its not as good as the hedgehog, but its easier to get as far as I can see.