:help me please: AMD overclocking

guys , I want to overclock my PC to the highest and stable as possible.

These are my specs

Motherboard:
Gigabyte GA-M56S-S3 (4 PCI, 2 PCI-E x1, 1 PCI-E x16, 4 DDR2 DIMM, Audio, Gigabit LAN, IEEE-1394).

MotherboardChipset:
nVIDIA nForce 560, AMD Hammer

BIOS:
Award Modular BIOS v 6.00PG

Processor:
AMD Athlon 64 X2 5600+ (2900 MHz) (14.5 x 200)

RAM:
1Gb x 2 Corsair XMS2 CM2X DDR2-800 SDRAM (5-5-5-18 @ 400MHz) (4-4-4-13 @ 270 MHz)

Graphic Card:
ATI Radeon HD 2600 XT (1024 Mb)

Hard Drive:
MAXTOR STM380215AS (80 GB, 7200 RPM, SATA-II)

I've search almost similar threads here and practice it, but It didn't come to solution yet, because a few differences of specs maybe (??)

I'm not a computer-expert, in fact, I am new. So any help will be valuable

Thanks before