Didn't he mean stamping the tax disc, not ripping it out of the square bit of paper?? I'ev never understood how so many people can botch that up.And they never tear my tax disk out for me... maybe they're lazy at my PO but means it comes out straight when I do it myself! (says she, tempting fate with having to get a new one tomorrow morning! 
Cos this is the old style version with 5 screws at the back, and 5 screws at the front [:|]Probably stupid question, but.......... why didn't you just unscrew the back?
Hang on, are we talking the same thing here... Mine has screws at the front as well, and there's no way you can take the back off without undoing the front screws as well [:S]Same here, and I've changed the tax discs several times without ever having to pry it off the window
Am I going to have to take pics tomorrow?