if I get divorced with no job, what do I do to stay in US?

[wonderfullife]

I'm Japanese and I have been married 13 years with US husband. We got married in Japan, then we moved to US in 1994 and had a daughter. We are facing a possible divorce right now. My green card expires year 2004. I don't have a job, because my husband was self-employee and I was his assistant. So when I get divorced, I won't have any job or money (possible to seek out help to a friend who lives in a different state). If my friend could help me out until I find a job and my own place (if I can), can I live in US or I must go back to Japan?
Please help me!
Thank you.