hi cd,
how much time it would take to get visitng visa for parents to come here. any ideas????

I guess it's 2-3 business days, after submitting documents.
Details available at:
http://www.vfs-canada.co.in/index.html

Hi junior,
my wife is pregnant and we want to bring my in laws her what is right
process visitor or permemnent resident.if visitor wht is process any idea would be highly appreciated.

Perm. resi. might takes years.
Visitor visa gets issued in 2-3 working days.
For your purpose, visitor visa makes more sense.
There is an article about documents required and format of invitation letter in "article" session.