Visas 

All foreigners entering India need a visa.  You can print the form off the Internet, and apply by mail.   You have to send an application form, passport, photograph, return postage and money order, then they usually send you your visa within a couple weeks, and you're all set to go.  

Latest news is that the Indian Consulate is no longer allowing postal applications so make sure you visit thier web site (link below) and check for your nearest visa surgery or how to get your visas.

Indian Consulates

For further details check your local Indian Consulate website.  http://www.hcilondon.net for the UK.

To find your local one  in the USA go to ... http://www.indolink.com/consulate/add...   For the rest of the world go to ... http://www.indiagateway.com/gov/consu...