Argh Computer/Wireless Problems

My wireless net access is down at home right now. Not entirely sure why, but here is what happened...... 

Everything was just fine.... then I was in iTunes synching my Ipod and it froze (this happens occasionally in iTunes for me). 

I had to turn off my computer from the power source and let it come back.  No connection. 

Then the system managed to find my wireless source (my neighbor) but the connection was crippled and almost non-existant. 

When I returned home last night - no connection no matter what I did. 

Same thing today.  I'm going to ask my neighbor for help Saturday or Sunday (hopefully he's going to be home), but until then I'm out of luck. 
I'm pretty sure this is my system and not his because everything was fine until my iTunes crashed.

This isn't the biggest of deals as I went over a year without at home access, but I will miss not being able to update my Podcasts etc.

I might need someone to talk me out of this.....

http://sanantonio.craigslist.org/pet/827526369.html