I wouldnt use soap dude. Or anything that dries ur face out. Your skin can tell its dry, so it tries to produce more oil, hence, as you said, sometimes making them bigger. I started a pimple thread when i signed up a couple of years ago, and ive still got them.
I wash my face with clearasil each night when i shower, and then i apply nivea moisturiser. Mainly around the corners of my mouth, and nose. Most common place that i get them the worse, and it looks like coleslaws when it got really bad when i was younger.
I'm seriously considering trying pro active now. I had a couple of friends who went to dermatologists, but didnt use anything, because of the side effects. Diarrohea, etc.

Being 19 and having pimples sucks.
Working in sweaty enviironments is bad too. Im a glassworker, so its about 5-10 degress (celcius) hotter in the factory then the normal temperature, so we tend to sweat alot... Causing pimples on back or shoulders or chest.
But my regular routine usually keeps my face pretty clear when i keep it up.
And the seriousness in stephs post made me nearly pee my pants
Peace