I'am a foreigner, married to an Indian. Can I visit to Canada while I'm staying in India with RP.?

I am a Bangladesh citizen married to an Indian. I have been staying here with RP. RP is given for a year and its needed to extend every year. I am permitted to stay in India upto March 16, 2011 which will be needed to be extended again next year. My husband who is a software engineer needs to visit Canada. Can i accompany him? Can I get Canadian Visa? And if yes, by which time I need to come back to India?