Side key is all apps for the Zen theme and center key is for the wap browser (why wap you ask)? Because my firms IT policy prevents me from responding to internet email sites from the Blackberry Browser. That's why I can't wait for the new BIS.
I'm just wondering what everyone is setting their convenience keys to. After I did the upgrade to the Bharti OS, I am using the convenience keys less and less. I have the dialing turned off so I can just use the shortcut keys. So far, I have not found 2 options that I can't get to via the shortcut keys. Anyways, I kept the convenience keys set when I first got my 8700, even though I can now hit M for messages and F for profile.