One little company I have come across is Frost.co.uk they have some excellent renovation products, of which I have tried a few....and they do work.
Amongst them is their glass polishing kit, it does work, although only on light sratches, but it did improve the overall look on my svx. This combined with Joe's advise will give your car a fresh look at a very cheap price....nowt like elbow grease!!
John
