to remove my molex plugs I just ripped out the wires with a set of pliers then i put them back in and shoved a screwdriver in them from the front to push back the barbs they have on them, its kind of a ghetto way to do it but it worked, although a few wires come close to falling out from time to time. next PSu i get will be that modular one with all the cables pre-sleeved. I also looked at radio shack that have nothing relating to molex connectors, try looking at www.outpost.com
, they might have a store near you too, the store is the size of a mall its sooooooo huge! they have everything! and I'm not exaggerating.