there are two immediate ways one is on the web Goto
http://www.mitel.com/contact_solutio...index.cfm?id=6 and it will ask you for your name & a pile of peticulars, like how many Employees, how many locations Etc, and some one will Contact you, about buying a system, If you want to become a mitel Reseller, then
http://www.mitel.com/partners_resell..._a_sp.cfm?id=8 would be the site to give you the peticulars, otherwise the Best Bet, would be looking in the Yellow pages, and looking for something that says mitel authorised Dealer,
if there arn't any in your local area, finding a solution provider in your area would be the route to take,