How to overclock Dual-Core CPU E5200? Lacking options in BIOS

overclocking

This is serious problem.

I want to speed up my compilation process.

I have never been special fun of overclocking, however time of compilation of my current project makes my crazy!

I found information about which parameters I should change during overclocking, which values are quite safe.

However I have one basic problem. I don't have possibility of changing this option in my BIOS.

It is possible, that I have blocked some some options by our sysadmins (as you can imagine.. this is not the best idea to ask him about help, and no, I will not get better CPU, if I will ask).

so, question is simple:

How to edit proper values to overclock my CPU. Do I need flash my bios to another version?

my stuff:

HP Compaq dx7500 Microtower
Pentium Dual-Core Cpu E5200 @2.5GHz
Ubuntu 10.4 LTS/Windows XP SP3

BIOS Information
Vendor: American Megatrends Inc.
Version: 5.07
BIOS Revision: 8.15

Base Board Information
Manufacturer: PEGATRON CORPORATION
Product Name: 2A84h
Version: 1.03