Um, HI, we need to meet sometime. You are EXACTLY in the same boat I am. I am Indian also, and I have been fighting with my father for the past month about me not wanting to become a doctor.
One good thing about Indian parents is that they don't know what's going on in college. They look at your grades, BUT, they don't look at or understand what classes you are taking. Especially if they've just moved to America from India. So do what I did, act like you're taking pre-med classes, and sign up for pre-dent/pre-pharm prerequisite classes while you're in college. Your father is paying, you don't need to take out a loan, and he'll never know.
I fought with my father for the past year, because I didn't and still do not want to become a doctor. However, I looked into other options in the healthcare field and decided on pharmacy. My only major mistake was that I did not decide what I wanted to go into until my last year of college, and by this time, it was too late to fulfill all of the pre-requisites for pharmacy school. I completed some during my final spring semester, and I am currently going back in the fall to complete the rest of them. I am currently applying to pharm school.
The best thing you can do is to decide AS SOON AS YOU CAN what field you really want to go into, then go and take those classes, act like you're pre-med so that you are not in financial debt and to get your father off your back. Then, take the MCAT (yeah it costs 200 bucks and you're going to feel bad for wasting your father's money, but you gotta do what you gotta do), and take any other exam you need to get into the school of your choice (whether its the PCAT, DAT, etc). Then, apply while your dad is still paying, find a way to take out loans for whatever grad school you decide (because honestly, your father sounds like mine, and he probably won't help that much when it comes to paying for medical school since it is ridiculously expensive, and you will have to take out a loan anyway), and then just GO. Don't look back, and you might feel a little guilty for wasting your father's money for taking the MCAT, but just do it. Take it from me.
Now, whatever field you do decide to go into, just make sure you're serious about it. Start acing those pre-requisite courses, and make sure you rape whatever exam you need to take for the grad school. Show him you're worthwhile and not a complete **** up because you didn't want to do medical school.
My dad says the same thing, he doesn't need my money, he simply just wants me to become a doctor for the money so that I am happy later in life. Just ignore the others in this forum; your father is not an evil person and he's not trying to hurt you. You have to understand, your father is from India, where they see poverty every single day of their life (I'm sure you have seen all the beggars on the street). Your father truly does want to see you happy, and he wants you to have that financial security and job security that the doctor profession offers. He may not say this, probably because he doesn't know how to convey this. But it's true. And when you're Indian, the only professions you know are doctors and engineering, because that is what all the other sons/daughters of their friends are doing. Pharmacy/dentistry/whatever health field is a novel idea to him, and he doesn't understand why you would want to go into those fields. He doesn't understand what is so great about those fields, so you will have to persuade him and show him that its something you really love. I tried to show my father this, but I have given up now. Keep trying though. He is your father though, and he loves you, and the least you can do is to show him respect and explain to him this is what you want to do.
Financially...I say, take out loans. I just took out a loan through FAFSA, and since my parents will not co-sign any loans, I had to contact my financial aid office at my school, and they told me to bring a note that said my parents would not support me at all. However, I am still considered a dependent, but I did recieve $4,000 per semester and have about $400 left to cover. I will probably apply through Sallie Mae or something to cover what I need to cover. And jobwise, I say, networking is your best bet. Talk to your friends, a lot of them can help you in surprising ways. I have, but I may have to end up doing two jobs to make ends meet (being a Hostess at a restaurant, and tutoring others), and know that while life is going to be hard, make sure this is what you really want to do, and don't just quit because life is hard. My dad cut me off completely, and didn't even give me a car. It sucks really bad. BUT, if you're determined, you will find a way.
Good luck, and PM me if you have any additional questions. I'm really glad someone else is in my same boat -- it definitely helps knowing I'm not the only one.