imported_DT80

anyone know a good school that i can get a recognized java/.net certificate? i got my B.S.C already but wanna refresh the skills. i don't want another diploma/degree, i heard there are those courses/programs that runs for a few months or so and you'll get a certificate.. anyone know a good school and around the oakville/mississauga area? i know there are some I.T people in here so and recommendations would be great.

thanks