Overclocking help

hi seeing that i have a p3 1.0 ghz i was hoping to get a bit higher cuz my graphics card and all is good.
whats a decent program??

also whats a safe temp like without ne chances i mean i got 3 fans but still wann not melt.

my graphics card sits at 37C after gaming and during. and about 32-34 idle.
also whats safe temp and how do i find the temp of cpu?

thanks