Silverlight help - grid, canvas, zoom

Question

I need to build something like this.

Idea is to have User categorized using above pattern over the screen. USER1 will have all first row, USER2 and USER3 will split second row, and so on... Every user will have in his cell his data.. name, surname and some other stuff.. Also, it's important to be able to zoom.. Something like google maps.. when user zoom in, he will see more data of users and so on..

Now, questions. I'm novice in SL, so can you recommend me what's to best way to do :

1. To build "table" like in picture above. Using what UI element? Grid, Canvas, something else?
2. Can you point me some links, article how to build zoom effect or anything where to start?
3. Any other advice that concern this project is welcome...

Thank you in advance