if you need to get them refurbed, you should have a go at them yourself first, if it goes wrong ... well you were getting refurbed anyway so its all good. Check out boneybradley's thread, or someone else's. a few ppl have done their own on here.
I can say, if you have oxidation under the laquer, you will need to strip the alloys back to the bare metal. Use a grinder and one of those twisted mehttp://www.golfgtiforum.co.uk/index.php?topic=84054.0
Need Alloys Refurbedtal abrasive zip wheel things. Etch primer, then paint and a sh!t load of laquer. ohh and clean the insides with some 1000 wet/dry and brilo pad, then add a few coats of paint, looks smart for a quick job.
left is before - right is after.
ohh and the info above is what i was told by the pro who is gunna spray mine, i will do all the prep work though. Thought i'd let him spray it, as he offered and it would look better, but you can do it all yourself.
LL
