Chat Widget for Mobile Alerts

Here is what I want:
To be able to receive instant messages from my website while I am away from the computer onto my Blackberry phone.

I don’t want my users to have to sign-up, I want them to be able to just start chatting away.

I have Meebo embedded now but my Blackberry doesn’t support Meebo.

I just installed a Google Talk icon but for some reason my BB doesn’t recognize chat messages coming from my website.

My site’s Contact Section is where BOTH are installed now.

I’m researching Skype to see if that will do the trick, because I know there is a Skype WP plug-in out there. But I need to find out if users will need to sign up or have an account in order to talk (which is what I want to avoid.)

Anyone use Google Talk on their mobile as well as the Gadget widget on their external site? (Not iGoogle).

Thanks so much,
– Sarah Taylor