how to put a chipset heatsink on a network card and -5v out of threshold?

on an a7v, took the green heatsink off of the chipset and put a blue orb, now i have the green heatsink lyin around and wondering if i could stick it on a network card or the other chip on the board...not that its necesarry but why not..how would i attach the heatsink? i don't see an easy way to clamp it on, is there some sort of sticky stuff i could use?

also the asus probe program always says my -5 V is out of threshold...what's this mean?

You can use some artic silver thermal epoxy thinned out with a little artic silver thermal paste and that will hold it on there. Other people use a little dab of superglue in each of the 4 corners with some artic silver in the middle.