U can take the help of a local lawyer who will help u out with the marriage ...... This is for your information .. ....
Visit the Marriage Registrar's office in your area ...... get forms for getting married under the provisions of the Special Marraiage Act ( the form will give u an idea of what is neeeded ) ...... Under SPA u have to give one month's notice ....... and after expiry of one month both of u can get married if there is no objection from anyone ....... In SPA each spouse can retain their respective religion ......
Easy way is for u to get converted into a Hindu and get married by hindu rituals .... for that u 'll need a pandit who would have to perform the marrauge and grant u a marriage certificate ..... which marriage u can later get registered within four months .....