high voltages on be6 II motherboard

I use a Abit BE 6 II Motherboard with Abit SlotKet Adapter. In BIOS its only possible to set voltage up to 1,95 V, but I think I can get my Cel 800 currently @ 1066 more faster with higher vCore voltages. How is this possible ? Do I have to change Jumper settings at the adapter ?
Thanks for help,
Riscracer

Yep, change the slotket jumpers to like 1.9v (or anything a little higher than default) and the BIOS will think the default voltage is higher and give you higher settings to choose from.