Oh yes you guys are rite 3mths..thnks for the info all!!
THIS IS WHERE I ACTUALLY FOUND IT - and to my surprise i have gone thru this guideline manytimes and i still missed it lolzz thats actually very funny !!
http://www.cic.gc.ca/english/information/applications/guides/3999E.asp#cont idcont
I have a question if I submit by application to missisissauga by the 1st of febuary 2011.which will take around 43-45days approx over there and then will transfer the file to New Delhi for further processing. And the PCC I have was issued on december 14, 2010. So do I need to do it again or not, as i submitted the appilcaiton within 3mths time. I am not sure if that be consider for missisissauga (the processing centre) or new delhi (visa office) - the 3mth time period.