Inccidently Xbladr ,if you have a latter XP2800 with the translucent packaging they are far harder to join bridges.Also with the XP2800 @2.083GHz its not going to overclock by a huge amount.If your lucky you might get 2.3-2.4GHz ,more likely your limit will be about 2.2GHz.If you've got DDR400 RAM the best way to o/c it is via the FSB in the bios.
1 more thing ,if you join any bridges ,make sure you fill in the pits 1st