[DotNetDevelopment] connect a windows authentication SQL server 2008 r2 db

[henry]

My code can connect my db with following connection string on the same
PC of SQL 2008 R2 DB:

Data Source=XYZ\SQLSERVER;Initial Catalog=my_db;Integrated
Security=True;uid=user;pwduserpassword;

But when I use the same connection string to login to the db from
another PC, I failed. If I take ";Integrated Security=True" out, I got
login error.

How to fix this?

-Henry