The file descriptions for QSA standalone installation seem to exclude the combination of Solaris 10 for Oracle 9.
This is a documentation error and a request to update the download site has been created.
The file you need is described as "Quest Server Agent file for Solaris 2.x servers and Oracle 9 and 10g Release 1 and 2 databases", even though the full description of this download suggests it does not handle Solaris 10.
The filename is SunOS-5.6-Oracle9.tar.Z