The matter of d20

So since i'm just an interested observer i want you to ask a question which might sound stupid or retarded. I would like to know:
Could you create a online client server based system which allows 2 or more users to participate in an pen and paper rollplayinggame which has following features

1. A system to create common dice rolls with different numbers of dice faces
2. A so called "White board" which is administrated by the game master and allows shared images between clients and server
3. A chat the ability to have layers which allow 3 type of chatting "Talk" "Game Action" "Off Game talk"
4. A possibility to log chat of each layers at sepperated files

The essential question is:
How long would it take YOU to create a program with this features?
Which language would you prefer?
Which size would you estemate?

Even if this question sounds stupid to you would you mind answering it pretty please

The specifications you have given are both clear and concise leading me to believe you are more intelligent than most people who request software.

The simplest way to implement this would be to layer it on top of IRC and wrap it up in a GUI for user friendliness. The whiteboard component is probably the hardest part; there are probably existing implementations that can be used, but if not it would be necessary to implement my own.

Worst case scenario, maybe a couple of weeks for a working release, couple more for testing and polishing.