Backup Exec selections

I am running Backup Exec 9.1 on a Windows 2000 Server. I have recently migrated from Exchange 5.5 to 2003. Migration went well.
Problem is as follows, My backup job is still trying to backup the old Exchange Server, it no longer exists on my network and it is not in my Backup Selection list. I have no idea where to remove this remote server from the backup job.
Any ideas??