OSX Leopard Server in Parallels 7 on Lion

I am quite frustrated with the lack of documentation for Parallels 7 installing anything beyond Windows, and the overwhelming amount of information on installing Windows with little information for other OS client installation.

There are other reasons for using Parallels beyond Windows!!!!

I need to install OSX 10.5 Server on Parallels 7.0 as a client on OSX Lion 10.7.1, a supported installation.

All of the product literature of Parallels asserts that this is a supported installation, but there is no documentation on how to do it.

I have the OSX 10.5 Leopard Server distribution disk, a licensed and purchased copy, but the disk is not recognized by the Parallels installation program. Even worse, the Parallels installation routine has multiple options for installing various copies of Windows, but none to describe the installation of OSX Server.

Does anyone know how to accomplish what Parallels asserts its software will do?

Thanks!