What type pf machine do you want to view your MBP screen on, Windows or Mac?
Here's how:
On your MBP, go to System Prefs->Sharing, Check the Screen Sharing Box. Then check the "Computer Settings" button, check the VNC box and add a password.
No, on the machine you want to use to view your MBP:
If it's a Mac, in finder, selected Go->Connect to server, and type "vnc://<ip address of MBP>
If Windows, you'll need to download a VNC client, there are plenty of free ones, for example, TightVNC
Note, if the machines are not on the same network, you'll need to do some port forwarding on the router that the MBP is hiding behind in order for things to work.