well on that account the best options are to ask around at the Veterans night at your local GW, get a friend or two to start it as well, or simply join the Conclave (
http://www.specialist-games.com/inqu..._b/default.asp ) - the official unofficial Inquisitor forum, theres a topic in the hobby section with a list of where folks live around the world, the perfect way to find opponents.
I'm lucky in that my local GW is GW Glasgow(Scotland), which actually has a reasonably good sized Inquisitor following.