You can use the link to eHR that you got through Google. As
@sigma7 said, just use your normal TM number and password to login and there is a working link to view your paystubs in there.
Alternatively, you can go to
http://hrportalext.target.com (think HR Portal External and it becomes easy to remember).
The new eHR has a different website now and I can never remember what it is, but you can still get to it by using the link I mentioned above.