[REQ]unlock Dell inspiron 1520 bios

hi guys!
i want to do overclock to my dell inspiron 1520 but i realized that there is no cpu performance options on bios. i am not an expert but i think these options will probably be available if somebody unlock bios' hidden options (if bios really includes this option)
could someone please do it for me if it is possible to do overclock with unlocked bios


http://www.dell.com/support/drivers/tr/t...1520?s=bsd


here is the bios file

thnxxxx