Is it possible to update my calender online via my blackberry through Verizon...

We use ACT, however, this isn't the program we must use, whatever is the most user friendly... The way they would like it set up is pretty simple, but i'm not much of a blackberry user.

We want to be able to put stuff onto a calender here in our office, and she will be able to pull that calender up on her blackberry and see it as we make changes to it?

Sorry such a simple question, any help though?