Remove User DSN manually after ODBC was removed

If I have the USER DSN specified on the computer which had Oracle cleint on it, can any body tell me how to remove it manually b/c the ODBC was already removed and everytime when I click the remove tab , it didn't let me and say that the ODBC was not existed. So how do I removed it manually???

thanks

I think you'll have to open the registry Editor "regedit" and search for the DSN name, then delete the entry. BACKUP YOUR REGISTRY FIRST.