Hi Sam,
No suprise, check out the article Anita suggested by Phines.
It looks daunting but providing you know one end of a screwdriver from the other you should be able to tackle it. send me an e-mail and I will give you my phone number and you can call me if you get a problem.
Pleased to help out a fellow U.K. VX owner.
Best regards.
David Wiltshire.