Media for Wireless connecting 2 buildings

Wireless connecting 2 buildings

Hey Guys,

I really need some help with this one.....

We have 2 buildings up north, one gets internet connection through satellite, the other nothing...

My bosses now have decided that the other building needs to be connected, which means I need to figure out a way to connect them....

One guy is telling me that you can get small dishes, since the buildings are about 2 km away from each other and "in line of sight", that will "beam" the signal over....

Basically, and the easiest way to put it..... Building 1 has server, building 2 has internet. Building 1 needs access to server, then eventually building 3 (which is FAR AWAY from both these buildings) will also need access to the server in building 1. On another note, when they go to trade shows and such to sell products they will want to

be able to access the server at building 1 to set up new accounts.....

All I can think of is using netscreens...... but having very little knowledg about netscreens Im very hesitant on using them.... THERES gotta be a different way!!!

Please help me out, as this needs to happen in the very near future!!!

Thanks!