I guess you already might have thought about it, but you can definitely tap DCE/NSIT alumni groups as well to spread the word about these openings. (And may be IIT-D as well?)
Hope you guys build a solid business. All the best!
Animesh Jain (Founder, itasveer.com) is a IIT-D 2004 passout. I met him during the HN Delhi meetup back in November. You can check with him. He might be able to connect you with relevant people/groups over there.
I'll drop an email with his contact details. (He is in my LinkedIn contacts as well.)
Yeah, it takes a lot of effort and some luck as well to build good teams. All the best. :-)
Another place you can (may be) post your openings is - http://groups.google.com/group/headstart-network (Although am not really sure if the kind of people you need would be on it, but might give your startup more visibility.)