I successfully installed SQL Server Profiler 2008 R2 Profiler without uninstalling SQL 2008 R2 Express with the help of my colleague.
To install, first make sure you have the Enterprise Edition DVD.
run the setup.exe of the installer with these parameters:
setup.exe /FEATURES=Tools /Q /INDICATEPROGRESS /ACTION=Install /INSTANCENAME=SQLSERVER2008R2Ent /BROWSERSVCSTARTUPTYPE=Automatic /AGTSVCACCOUNT=”NT AUTHORITYNETWORK SERVICE” /IACCEPTSQLSERVERLICENSETERMS
where the value of "/INSTANCENAME" is equal to the instance name of the Server Instance that you wish you use.
参考原文地址：
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/4808224c-1adb-4e43-8ae8-c45aba48abb1/stumped-how-do-you-install-sql-profiler?forum=sqlsetupandupgrade