The websurfer pro has jumpers that clearly show the way to overclocking. However,
it appears the CPU has only 3 frequencies it will run at: 100, 180, and 233.
I've been running mine at 233 for a couple of hours, compiling kernels at the like,
with no problems at all. I would also guess that if you had
a different CPU, you could probobly run it so long as it runs at either 2.2 or 2.9v. The board maxes at 333mhz.