Paypal Sandbox payment problem

Hi,
I have a problem setup test payment for membership levels ( My Account-> My Membership ).
First of all I want to make test payments via Paypal Sandbox. I have different membership levels and I have account on PayPal Sandbox, but I am not sure what settings to make for correct test payment.
When click on "Checkout" button I go to page https://www.sandbox.paypal.com/cgi-bin/webscr  where writes "Please login to use the PayPal Sandbox features." And even if I login, I go to the test paypal account, no to payments.


Can anyone help me?

Thanks in advance!

You will find very good tutorials there: http://www.darrenpowless.com/

When u log in 1 time on sandbox its yours seller account then....

When u log in to sandbox are you create are new account for testing? Clik on Test account (right site) and create a new one save login and password then go to u website and try it.