hey, i have a desktop comuter that i usually go online with using wireless. the computer i am on right now is the main center of the wireless signal and hookup. in the past i have been able to connect to the network without problem, however as of late my computer will just not connect. when clicking the 'view wireless networks' on my computer it will pick up the signal at a high strength and speed and whatever but when i try to connect it will either just not connect or will say 'limited or no connectivity' which is always no connectivity for me. like i said i had always used the network no problem so i already have my computer added to the system and everything, and the signal is being picked up, but it just wont connect. i click on my connection and click the 'repair' button and it still does nothing, saying things like 'problem exists because you could not renew your IP address' or 'your computer was not given an address' and 'could not connect to network' even though every time the signal is noticed but just not connected to. pleeeeease help... i'm a student and desperately need the internet to do all of my work!!!