So, having just purchased an i5 3570k to upgrade from my E8400 I think my case could do with a bit of a spruce as well.

I am thinking of painting the internals matt black, its a bit cleaner then the grey, but not sure where to start. Is paint from the local Homebase/B&Q good enough or better out there, how many times to sand (and what grade) and prime, do I paint in parts, or all at once, and how long to leave to dry. All these things are going through my head.

Any advice welcome?