Powerbook Ti cleaning...

I've had my Powerbook Ti for about a year now, and while it's in good physical condition, it's getting a little grubby looking. I wipe it down with a slightly damp cloth every week or so, and wipe the screen with one of those soft dry cloths you use to clean your glasses, which sort of does the trick, but it just doesn't have that gleam it had when it was new. The screen, understandably, has picked up a sort of thin film which just won't come off when you buff it with a dry cloth, and the actual metal body has started to look ever so slightly off-grey from the dirt/sweat/grease off my hands. I reckon it'd polish up nicely, but I need some sort of cleaning solution.

So, can anyone recommend a solution to use to clean my precious laptop up? Preferably one which is sold in the UK?

Cheers in advance!