-As I've been contemplating the same change (IT -> Photography), I've found that most colleges or university offer some photography courses or even complete certificate programs. Here in Montreal, Concordia university offers a night time certificate in photography.

-Living in Ontario, I can only give you an idea of what is available here. As mentioned by Sylvain Mercure, many universities and colleges do offer photography courses. Many of these are available as night school courses so that you can continue with your current occupation and studies at the same time. If you really wish a more intense course in photography, then I suggest you find a college with a full blown photography program. Examples of these in Ontario are Sheridan College, Humber College, Fanshaw College, Loyalist College (specializing in photojournalism), Ryerson Polytechnical Institute (a university education and degree from their program), Ontario College of Art..... The reason I would suggest a college over a university is that the courses are usually shorter, more intense and more to the point. The learning is all about photography and no unrelated courses which you would have to take in university. It also saves you money, and allows you to get back into the working world more quickly. If you wish to work in a particular photographic field, check which institution focuses on your areas of interest most closely.

If I remember correctly, there may be two places in Alberta for you to check. NAIT and SAIT. The North(ern) Alberta Institute of Technology and the South(ern) A...I...T.... And there is also something in Vancouver, but I can't remember the name.