I was just wondering, if I could take some of the courses I need at other schools likt U of T, or York University during the summer???

Yes you can but I believe there are forms you need to fill out to confirm that the courses you took are recognized by McMaster.

aha! found the site:

http://registrar.mcmaster.ca /getreg/letterperm.html

this has the complete information

You should also contact your faculty to make sure they will let you take it. If it's just an elective course that doesn't go towards your degree (the 120 credits for most degrees) then I would say chances are 99%. I e-mailed my faculty (science) about that a couple months ago. But I would still e-mail them if that's the case. Not sure about if the course is required or goes towards your degree as I didn't inquire about that.

Edit: Just thought of something else. You still need to fill out all the forms and make sure the university or you send the transcript directly to your FACULTY. This is to make sure the course will show up in your McMaster transcript. But from what I know, professional schools (at least the waterloo school of optometry) will pull out your transcript directly from the school you took the course in summer from. So I don't think you have to send the transcript to McMaster if you aren't taking the course for your degree. Once again, I would suggest contacting professioinal and graduate schools to inquire if they pull the transcript for the school you took the course in summer from.

wait,
how do we pick summer school courses?
i don't see an option on SOLAR yet? *-)

You can start picking courses for summer 2009 in Marchish.

You only use SOLAR if you are picking courses at McMaster by the way. Just had to put that tidbit of information in case it confuses anyone since the title is talking about other universities.