Well here is the solution! Qunu.com!
At qunu.com you can find instant help for all your Computer related problems. And the nice thing is, it uses Jabber!
So just register or login with your own JID and start helping out people. You just enter your fields of expertise in your Profile, and you’re ready to go.
If you are only looking for help, no registration is required. Just browse and find!
I haven’t seen any site which was better than this one.
PS: Jabber Rocks!