There are a couple options here.
One involves aggregating the test cases into a "master" Regression Suite story, which can be copied and reused every sprint. To follow this process, create a story in your backlog called Regression Suite. At the end of each sprint, make a copy of each regression test and change the parent Story of the copy to be the Regression Suite story. Then copy the Regression Suite story itself, which will grow over time, into the release and/or sprint where you plan to run the suite.
If you do not want to aggregate the stories as above, you can easily get a list of all acceptance tests (closed tests also, but checking the show closed items checkbox) by using the Test Quick List report in the Reporting area (under Testing Reports).
-Maggie