Cmos-clr for Latitude D630 BIOS

[lvierra1]

hi all before i start i did just about everything in your previous threads to try to clear a A13 (revised) bios password. bought it on craigslist with the bios unfortunately live and learn and when i call dell they say i need to know the previous owners real name. okay. cant change boot, finally found cmos_clr on motherboard but dont know what to do with it. it has been almost 2 months if there is a cmos_clr could someone please explain to me what i could do with it. My ST# for Latitude d630 is GZKQJH1-(595B) your help is greatly appreciated.