The other day, I set up my Raspberry Pi Type B to enable VNC access via tightvncserver.
I wanted to try out the Wolfram Mathematica from my Windows 7 HP ML115. So, I installed TightVNC server on my HP ML115, and setup the tightvncserver on Raspberry Pi.
There is some lag of course when you drag the window, but other than that, it works perfectly on my LAN. Maybe I'll set it up so I can access my Raspberry Pi from the internet, but that's probably after I buy a case for my Raspberry Pi.