some kinds of sysadmin are easily done remotely. So is tech support. It depends on whether the job requires access to the console, or opening the case to install cards.

If you're looking for remote tech support work that's of a more advanced nature - NOT! "Click the OK button until it turns black" - apply with Luke Crawford - no obvious relation - at http://prgmr.com/

Luke's a good guy. If he can't hire you I expect he could refer you to someone who can.