Vista - My Computer is unable to find wireless connections

Help please, this is the story:

I turn the computer on, my router is in and running. I wait for the little computers to turn blue and have a planet in front of them but no... i hover over and right click and check connect to a network. And nothing... i only see dial-ups, no wireless even though i would normally see 3-4 of them.
So i have no idea what to do, i restart the computer, nothing gone wrong and still won't work right. I shut it down, wait 5 minutes and turn it back on, nothing. I checked Device Manager and went to Network Adapaters and there 2:

Brodcom Network Adapter - Has a ! in a yellow triangle and i check it and it says this device is not working, it does not have enough rescources
Realtek Fast Family Ethernet - Working fine and everything.

So i diable the Realtek one and still isn't working. I didn't do anything else as i am worried i'll mess the computer up if i do. Please help

Can you post back with some more information please as we don't have any specs for your machine, is it a desktop or laptop what make and model machine is it and what version of Vista does it run ?
What router do you have with what ISP ?

Don't forget if you don't fill in your System Specs when you come here to ask for help it wastes time while the experts have to ask questions about your setup so that they can help you