Command Pattern

Question

hello, i am developing an information system with asp.net and c# where a user can inform about hotel information (e.g. where the hotel is, details about the hotel etc.) and restaurant informations. i develop this system for a pda. The important thing i want to do is to log the actions which a user execute. (e.g. when he pushes a button oder klick on a link,..). A developer of microsoft austria told me, that i should do this with a command pattern. Unfortunately, i do not know how to implement the command pattern in my context and how i can use it? I hope somenone can help me, because it is very important. yours sincerely patrick