How to connect 100 computers together?

Why can't I connect to the internet?

• I'm using a MacBook 13.3" and lately it refuses to connect to the Internet. It first kicked me off when I was using iChat and a few tabs on Safari, and I assumed that it was because there were 2 other computers connected at the same time and I was using so many Internet applications at once. Neither of the other 2 laptops experienced any difficulty, aside from my slowing down their connection. This is a WiFi connection, by the way. Anyway, 4 days later I still can't connect. My iPod was having connection dificulties as well at first, but not anymore. I have 3 WiFi networks I can join, but 2 of them (which are always less reliable anyway) can't make the connection. The other one which has both the strongest connection and pretty much 100% reliability says it's connected, but no Internet applications detect the connection. I have all the passwords right. Network Diagnostics can't help me. I've restarted the computer, switched AirPort on and off, but no avail. I know the issue is the computer, not the WiFi connection itself (plus I have no idea how to restart an Internet router or whatever, or where I can even find such a thing). Is there anthing I can do?

• Answer:

  go to nearest mac store or go to their support section. It shouldn't cost you anything as long as you have applecare