I'd avoid any sort of DIY kit, the parts required are easily available from any place like Halfords. Here's two useful guides from other forums:
Refurbing & Spraying Alloy Wheels... - Detailing World Wheel Refurb - Detailing World
Just be aware that it's very time consuming!
If you do go ahead, I'm sure plenty of forum readers would like to see pics of your own experience
