Wendy, Researching India can be daunting. There are several sites,
india@rootsweb.com, india British Raj @rootsweb, FIBIS Families In Britsh India Society, Cathy Day's site, IOR the India Office Records in England. If you are near a Family History Library you can order films from their main genealogical library or visit to view the films they may have on hand. BASCA..British Association for Cemeteries in South Asia might be able to help. What ever you do, write down everything you know about your families at the beginning and work backwards. Ask your relatives what they remember...I am an only child so I don't have any to ask now. But I discovered my great grandfather was born in Calcutta in 1862! Good luck,
Susan in Texas