Another one of us 2000XP users
My one used to run at 65 constantly but I went to the extreme and bought a new case, system exhaust, 3 blue LED fans, a 2 40mm fan HDD cooler, a 80mm fan upgrade for my Heatsink and now I have a new fan waiting to be put in as soon as I get some stuff sorted. Now it runs about 40 - 45.
What GFX card do you have? (my GFX card raised the temperature of my CPU by 2C as it's so hot!)
Note: My bro just got home with Episodes 31 - 52 :O