I currently have an existing student loan from graduate school in 2004 - 2005. I consolidated with ACS several years ago and am looking to get a lower interest rate. It's currently fixed at 5.25% w/ ACS. I believe the loans were originally federal loans but are they still considered federal or are they now private? Also, in looking at my account my loan is referred to as an FFEL loan if that helps. thanks for any advice you can give on how i might be able to reduce my interest rate.

Yes your loans are federal loan. Unfortunately, once you have consolidated a loan it can not be consolidated again.