Voltage boost on Abit BH6

[Doubt]

Hi,

I've got an Abit BH6 and a Celeron 600, and the BIOS allows me to increase voltage only to 1.7V
Does someone know how to push the voltage even higher, without tweaking it on the slotket?
(1.8V or so would be fine)

Thx

 

[Doubt]

C'mon guys, I need this to get it stable at 855 (9x95) ;-)