Hi, just done the same thing. I got rid of the pull out shelf (save a bit of weight!) and bolted a wall bracket to the inside/side of the cabinet. I have a Meos 15'' which virtually weighs nothing so the security of the bracket wasnt an issue. The bracket enables the screen to come out, tilt, view left or right. This is it -chalten said:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300316975295
It's pretty solid, has cable management and all the fittings - you cannot go wrong!