OK well, I don't like waxing because I don't handle pain to well, so I use a razor to "trim the hedges"... one down side, razor rash... how can I treat/prevent it?

Change your blade every 2-3 shaves.

Use a shave gel/cream. Leave it on for a few minutes to soften the hair.

Shave in the direction of hair growth.

Shaving in the bath is great to to 'soak' the hair before you start shaving.