It seems as though you have all the right bits in place. Did you try the steps in this post?
http://sympmarc.com/2011/07/08/adding-jqueryspservices-to-a-sharepoint-page-step-one-always/
M.
http://sympmarc.com/2011/07/08/adding-jqueryspservices-to-a-sharepoint-page-step-one-always/
M.