How to debug sql 2005 on remote machine. I am administrator on both my dev machine and remote sql se

How to debug sql 2005 on remote machine. I am administrator on both my dev
machine and remote sql server machine.

I get this error when i try to connect to remote machien with visual studio:

unable to connect to microsoft vistual studio remote debugging monitor named
msdb3. the microsfot visual studio remote debugging montor (msvsmon.exe)
does not appear to be ru nning on the remote computer. please see help for
assistance.

Do i need to install more then jsut sql server 2005 on remote machine before
i can attach to processes remotely?

also what all ports need to be open?