Thanks richardson and Mizreal,I discovered I could relight my mouse by the lucky lightball hit thing but the programme is still jammed up,saying that ~ I can move around my mouse and activate some irrelevant things, but the document window wont work or anything in it(like cant select anything).If I try to render nothing happens(no textures load~just tries to) and if I try to go to another window ,say material -the system just clogs up ,dragging windows leaves multiple shadow windows and all other types of rubbish.I still havent tried pablos method of possible cure but with Mizraels message Im not too confident on that, unless its turning acceleration down?I'll try it tonight:) Thanks for the replys ppl:) Cal