Quick orders are part of CRM 7.2, which I don't believe is supported with version 4.5. You can download tablet component from the CRM Community Website. The 7.1 tablet component is ""beta"" but none of my clients has ever reported any problems to me.
Edit: I was a little out of it yesterday -- The statement by Alan Niegarth is correct. Ignore what I said about 7.2. :) #doh