[jQuery] jQuery Libary and Superfish collision?

[breastfed]

Hey,

i set up a webprojekt with the latest jQuery libary. For the menu i
decided to work with the superfish menu.
As i set up all stuff i saw that these two scripts deactivated
themselves.
Superfish uses jquery.1.2.1.js and the Libary jquery.js - How can i
combinate those two jQuerys?

Thank you!