Hi Jaclyn, I don't think 'Premier' is an actual edition of Salesforce. The ones I know of are:
Performance
Unlimited (legacy)
Enterprise
Professional
Group
Contact Manager
I suspect you may have Professional Edition (or below) as anything below Enterprise starts to have limited access to APIs and 3rd party application integration. If you do have Professional Edition, you might want to talk to your SFDC account exec about tacking on API/AppExchange support to your subscription.