I think you should stop taking your computer that. Most repair work can be done by a poor college student (like me!). Look for us on www.craigslist.org
. The SF Bay Area has the most activity, but craigslist is now also all over the world. Go post under Gigs/Computer, and you should get a whole pile of techs offering their services. Though as for upgrading a laptop's wireless... *shrug* I sure as hell can't do it, but I know you'll find someone who can if you ask for it.
Plus independant techs are usually cheaper.