Hi, My real first citrix introduction was to Presentation 4.0. I have no problem understanding the way user licenses are being handled in 4.0 In our existing production citrix environment we still use Metaframe XP. As I learned in Presentation 4.0 the user license version release should excactly match the release of the citrix servers. For instance, if I run the Enterpise Presentation 4.0 I should have enterpise user licenses. I am wondering if it was the same way in Metaframe XP. The reason I am asking is that I know we are running the Enterpise Metaframe XP and I see XPA advanced licenses loaded there. Are they being used? How does it work in XP? I can't really figure out by number as we have 102 licenses loaded there and only 50 are being used. Thanks in advance.