[AUCTeX] Is there any local variable to redefine "\item"?

[Adam Johnson]

Hello All,

I'm wondering that whether there is a local environment variable that I can 
use it to redefine the "\item".  When I use "proper" package for writing 
presentation slides, it redefines all the "\item" to "\xitem".  However, 
when I use "C-c C-j", it still inserts "\item" for me.  I need change it 
everytime.

BTW: I'm using AUCTeX  w/ preview-latex11.81
                        MikTeX 2.4
                        CVS Emacs 22.0.50.1
                        Windows XP.
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Best Regards,
Adam