jquery needs array module for drupal

Hello :)
I've just found jQuery and I wanted install it on my drupal site...
But, it needs array module, and I have no idea where to find it... On
drupal.org/projects/modules is only pagearray module and that's not
what I need...
Does anybody can help me ? Have any idea where I can find "array"
module ? Or maybe there's any other way top install JQuery'a on my
site .
Regards, kroolek :)