Network troubleshooter needed

Cartwheel’s computer network is sometimes a bit flaky.  We’re looking for a troubleshooter – someone we can contact on an ad-hoc basis when there’s a problem, and ideally, someone who can make the odd recommendation/suggestion to help things work more smoothly.  Must be confident with both Mac and PC platforms.  Can you recommend someone?  Or interested yourself?  Contact vik@cartwheelarts.org.uk by the end of Jan 2012.  Thanks!