You don’t have the wp_head(); tag… The wp_enqeue_script("jquery"); just says "Make sure to include Jquery when you spit out the wp_head… but you still need to put this code after that:
If you are still having trouble, after that:
Enable Firebug and tell me what error you are getting.
If you are getting the "$ is not a function error" you are having the exact same problem I am.
My "band-aid solution" is to include JQuery again after my wp_head():
I’ll probably have to post my own topic about it soon…