if you don't have the trip computer now, the stalk won't give you it. you'll just have two dead buttons on the new stalk.
Cruise control - you will also need to check if you have the correct module under the footwell with the connections - not just the new stalk...
there doesnt seem to be any pattern with which models got the one you need - there are two types and one has fewer pins. if you search through some of my previous posts you'll find a lot more info.
for instance - my 54 plate 130PD FR had the module required, as i think most diesels will,
however my mam's 08 plate 1.2 didnt - but my brothers old 02 plate 1.2 did!!
like I said browse some of my previous posts cos I cant remember off the top of my head the details on this, but i havent posted much recently on anything other than cruise control so should be easy to find!