I know that now, i think it could be the name is wrong in sql as its not the same name as the pc, and when i install sql on mixed mode it ask for the password and when i put sa in there it says password not suitable or something along them lines anyway.
Edit -
Just tried to re-install sql and when i select Mixed Mode then it ask for the sa password its doesnt matter what password i put in there or how long it is, it will always give me this message. "To continue, you must provide a strong sa password. To review stong password requirements, click Help on the Authentication Mode page." cant seem to get past this stage...