Cost of living and house rent details

Hi,
I am planing to stay at Leiden, The Netherlands for next three years. Basically I am an Indian and I have a wife and a daughter of 4+ years old. Can any body help me in finding a suitable house/apartment? And information about Indian Grocery stores in Leiden and ofcourse, the cost of living in Leiden.
Thanks in Advance.
Vijay

Jesu to say, Leiden is one of the most expencive places to live