WineWood: I currently own an XP 1800+ (1.533Ghz) and with my non pelter setup, I am able to OC to 1.748Ghz using stock voltage and keeping the CPU at a nice 30-32C. The only thing holding me back from going further is that my MB doesnt allow for AGP/PCI bus lock so my video and PCI cards are starting to complain AND I have yet to "unlock" my CPU.
Once I unlock my CPU, I fully expect to hit 2.0Ghz+ with a little voltage boost.
Keep in mind though, your CPU heat will greatly increase for every little bit of voltage you force into the CPU. My old 1.4Ghz T-Bird would max out at 1733Ghz but would run at 40-42C.
Hopefully you will have similar results but at least now you know for sure that it CAN be done without pelters and condensation.
Good luck.