How to strengthen wireless internet signal?

Hello people

I get internet from my neighbor next door, and where exactly about 18 ft. apart. I know that having a repeater or an external antenna can solve the problem but i cant afford those things right now. I know that on pc you can go to task manager and conentrate your bandwidth percentage to internet explorer, but is there anything like that i can do to my mac? also any other free way would be good too.

P.S. my neighbor said it was okay to use his internet.

old-wiz said:

So you're asking us for help in stealing from your neighbor's internet connection?

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No. im not. hence why i said: P.S: MY NEIGHBOR SAID IT WAS OKAY TO USE HIS INTERNET.