Is there any way to delete the Office Online icon on AT&T's Treo 600?

This icon appears as the first application icon on the Treo's screen. It sometimes gets pressed by mistake, which causes my Treo to connect to the Internet. This eats into my monthly kilobyte allotment (not to mention that it's also annoying.)

If the Office Online icon can't be deleted, I'll settle for changing its fuction, so a miss-press doesn't connect me to AT&T's website.