I bought an Omega today, and the only thing I can find wrong with it is that the central locking doesn't work on the front passenger door (everything else locks as it should and alarm activates). From reading around, I am guessing that it I need to replace the locking motor? I can get one on ebay, but wondered how difficult they are to fit? I know nothing about cars, and am completely useless when it comes to dismantling things and putting them back together. I envisage me sat there, with the door in bits. Forever....

Is it difficult to remove/replace the door panels?
Once removed, is it difficult to remove/fit new motor?
Any advice greatly appreciated.