Exporting Info from Active Directory.

For the past couple of months we have been using a very simple DSQUERY
command to export a list of users in the domain. That list is then sent to
us. Would anyone know how to modify and or the syntax of a command that
would export a user list which consists of Firstname, Lastname and Email
address. Ideally that it would export it to a either a text file or csv
file. I know you could you csvde but for some reason I cannot get this to
work.

We are running SBS 2003

Thanks peeps