Name: Your Name (What ever you want)
Email: Your username
Password: Your vsnl.in account password
Description:
Click Next Button
Hostname: pop.vsnl.in
Username: Your username
Password: Your vsnl.in account password
Hostname: smtp.vsnl.in
Username: Your email address is your username
Password: Your vsnl.in account password
Click Save Button
Use SSL: None
Authentication: Password
Server Port: 110
Use SSL: None
Authentication: Password
Server Port: 25
You can login vsnl.in and Signup for vsnl.in new account on your iPhone from here.