Java Database Connectivity (JDBC)

Hi!I am using jdk 1.4 and eclipse 3.3.

I create a servlet in eclipse with in-build tomcat.
When I run it ,it was working perfectlly has it was suppose to work.

In this servlet I connect to a sql 2000 database using jdbc-odbc bridge driver.

But when I tried to deploy the servlet on tomcat 5.5 manully on the same machine ,it gave me error saying

[Microsoft][SQLServer JDBC Driver][SQLServer]Login failed
for user 'sa'

I searched around some post and found that ok ,I need trusted connection

But I have 2 Questions
1). Why was in eclipse I was able to connect to the SQL server and why not in the servlet which I deployed manully on tomcat.

2). How do I create a trusted connection with JDBC for SQL server 2000


Thnaks for your help in advance.