Please help - Missing sqlbw.exe of SQL Server 2005

Recently, my SQL server infected with virus which modified some of .exe files on the server. Unfortunatly, the auti-virus software found those infected .exe files and removed them from server including the sqlbw.exe. Now I can't run the management studio. I tried to reinstall the only the management tools but failed. It said that my version is incorrect. I also tried to apply the SP1 but failed too. What can I do to recover only the management studio? I don't want to uninstall the SQL server because I have live database running on it. Please help.

If you cannot have a downtime to the databases then only way is to install another instance of SQL and use those tools to use this database.|||Have you tried uninstalling the original tools?|||

Why are you trying to run sqlbw.exe? You can launch management studio using sqlwb.exe and not sqlbw.exe

Thanks,

Sravanthi