MoHawk is kinda out of the way... you might as well go to Ryerson and do a degree in Information Technology Management OR go to Seneca college and do their network admin program ere (if you really want ta at the certificate / diploma level)... that is of course if youre in canada which it sounds like you are...
Better yet if youre legally allowed to work up here... find a low level helpdesk job and get them to pay for your certs / courses / whatever...
I would not waste money at one of thoe unaccredited private colleges though... if you do intend to do a network admin course at a private college, it should not cost more than $4000 and should cover at least CCNA and MSCE material (maybe exams extra)...
Also theres a microsoft testing center around every corner in toronto so you dont have to specifically choose a school which is a testing center.