1) Please go through at least 50 posts of this forum under family law section before proceeding to get better idea of legal position of india male after marraige.
2) If you are still dying to marry then.....read ahead
3) Take her in confidence and prepare a contract on stamp paper after consulting a lawyer where you both need to sign while doing court marraige and content should read like below
i) No Dowry has ever asked before marraige or till registering the marraige
ii) List of stridhan which she might be carring along to your home after marriage and which is in HER custody
iii) Mention in contract that her parents are against it and you both feel that they may crate legal and or physical problems once they come to know about your marraige
iv) Mention in the contract that you are a very gentle and straight forward person and she knows you since so and so time and vice a versa.
v) Also mention that she is capable and able bodied and would be able to maintain her on her own in case of any dispute/separation of any nature (if she don't aquire any serious illness/accident later in the life) and write simlar statements for you as well.
vi) Mention that in NO case there would be any legal action against each other except any sirious physical injuries
vii) Make note of any alimony etc. which may be given / taken in case of separation (you can opt not to give any but mention that no alimony would be asked in that case).
Consult a family lawyer and add/update/rephraise any of above terms and get it signed by two independent witnesses.
Even after doing all these you are not 100% safe from clutches of biased law but it would help you in safe guarding to so extent.
Regards,
PC