CAN A COMPAQ BE FORCED TO 100 MHZ BUS?

I HAVE A COMPAQ PRESARIO 5137 SLOT 1 PII MOTHERBOARD AND I’VE UPDATED THE LATEST BIOS FOR IT FROM COMPAQ. ALL IS SWELL EXCEPT I HAVE A CELERON 300A PROCESSOR RATED @ 66 MHZ BUS YET I BOUGHT IT FROM SOMEONE WHO SHOWED IT TO ME OVERCLOCKED TO 450 MHZ WITH A 100 MHZ BUS. MY COMPAQ CAN GO 100 MHZ BUT FLASHING THE BIOS MEANS FOR THE FLASH PROGRAM TO READ MY SYSTEM AND IT FINDS A CELERON RATED @ 66 MHZ AND INSTALLS IT ACCORDINGLY. THERE ARE NO MANUAL JUMPERS OTHER THAN MULTIPLIERS AND THEY HAVE NO EFFECT ANYWAYS AS THEY SEEM WRITTEN AUTOMATICALLY BY THE BIOS AS WELL. MY QUESTION IS CAN ANYONE TELL ME A WAY TO GET AROUND THIS OR HAS COMPAQ CREATED ANOTHER HOSTILE SITUATION?