i just wipped out my old 478 board and about 10 of those chips

i been overclocking but the thing is that my board dosn't have any kind of voltage options...
my board is a Biostar P4M900-M4 i don't really want get a new board because simply it has DDR2-support..
i been looking around internet and seems like i just can't find anything about vmod for 478 motherboards...
and i already tried the mod in my attachment and the and dosn't seem to work at all...
i don't know why...
it boots and all that... but no voltage will not change at all... it stays in 1.5V
maybe i am doing it wrong...
i have the Northwood Pentium 4 3.0GHz FSB 200 x15 L2-512KB