SQL Reporting Services

Here is the Situation.
** SQL 2005 SP2 on WIN 2k3 Enterprise R2″

I have 3 instances on the SQL report server. I uninstalled one going through the “Add/remove Programs” and restarted the server. when i try to pull up the reporting services Configuration console, i get” No report servers were found on the specified machine, Details: Invalid namespace”. IIS is installed and running, in Services console the other two reporting instances are running. Under the MSSQL.x folder i stil lhave the report server, report manager folders, and i can still access reports on both those instances from the corresponding applications. What went wrong here ? anybody has any ideas ? Thanks.