Can't connect to Oracle 10g database on a Windows 7 OS. The install client area of the connection screen, returns error message "This Oracle Home is invalid".
SQLNER Editor, TNSNames Editor and LDAP Editor all grayed out.
See Screenshots.
10g client not supported on Windows 7.
Windows 7 does not support Oracle Client 10g. Upgrade Oracle client to 11g 32 bit. This should establish a connection.