Hi Vivaid,
A very simple procedure for a IDP (International Driving Permit).
Become a member of W.I.A.A. (Western India Automobiles Association) fees will be according to the class of membership (you can become a non-car member for a minimal fee)
WIAA Address:- Indian Merchant Chambers Bldg., near Suryodaya Super Market, oppo Churchgate stn. or log on to
www.wiaaindia.com
Once you are a member they will carry out all the formalities for you. You just have to give them a signed form with the fees (about INR 1000) along with a few other documents and without any running about, you will get the IDP in your hand within a weeks time.
Let me know if you need any further help.
az