I have a Graflex 3 battery flash.
What cord do I need to connect to the bipost on the lense?
What flash bulbs do I use with ASA 100 and ASA 400 B&W film and where do I find them?

1). A bi-post to household. Try http://www.paramountcords.com/ or a high end camera shop.
2). Depends on what base adaptors you have. Try Bill Cress http://www.flashbulbs.com/index.shtml