how to connect tomcat server application to sql server

i have a sql server
i m having one application in which i m giving parameter from html form
to servlet controller using tomcat server.
if i want to store parameter in the data base from tomcat application.
than how can i make a connection with the sql database

my code

my servlet code

in servlet code what changes should i have to do to connect
it with the data base .
if anyone can give me good link it will be also help for me
[ August 17, 2005: Message edited by: sandeep mittal ]

Start here.

Then here.

thanks Bibeault
for giving me direction