1. Check with (the IT/Computer departments of) local universities/colleges
2. Find a few local computer/hardware/software/networking/web design shops (via Yellow pages or online search) and check with them
3. If all else fails, 'roll your own' :-). Sign up with Meetup.com and form/announce a group meet (a few weeks forward) - the results might surprise you; they sure did me once.
HTH
If your city isn't listed there you could always search the name of your city in CrunchBase (http://www.crunchbase.com) and a you should find a bunch people that way.
Here in the north of the UK, the "Geekup" events and mailing list, Think Visibility conference, iLinkoln and the NWRUG (a Ruby User Group) have been most helpful in getting me "into the network" as it were.