Shoutbox

You can Try VNC which allows user to see the desktop of yours...

you can set password so tat only the ones tat know your ip and password will see your desktop...

you can also set to allow the user tat is seeing your desktop to control your mouse cursor and keyboard typing...

It's also idiot proofed

I not sure if i can post the link here...
http://www.realvnc.com

if it's illegal pls edit off =P