halp!

Urg, flist, I am having wireless unhappy. I share internet with the girl next door, and sometimes it does this thing where the network connection vanishes for a second and then comes right back. My boyfriend's pc is never phased by this, but my mac gets all fussy, and the system has to be turned off and on again. Which wouldn't be a big deal, except that it did that last night and my neighbor hasn't been home since, and I have a worried that she'd gone home for the holiday.

Do any of you have the slightest idea what this glitch is, and if there's anything I can do to repair it? Because the network is running - I can see it in the Airport menu - and the Biy's machine works fine, but mine won't. hook. up. And I hate using his system. /whine