hi mate welcome to the club, don't waste your money going to a garage to find the problem, there are4 plugs under steering column, 2x black and 2x green, they may be taped up nice and tidy, just undo so you can get to them. the 2 black conectors once connected will check for fault codes (your flashing cel light)....and if you conect the green ones too....this will do a reset after you have checked the codes...my advise is to just conect the black ones and watch your cel light, it will flash out a code...i'll put a link up so you can have a look
http://www.saxonfields.freeserve.co.uk/Sco...Diag%20Page.htm
this will tell you everything you want to know,
mark