Backward Compatibility?

If I develop an application on Solaris 7 using C++5.0 (in 32 bit mode). What do to tell a customer that uses that application about what the minimum requirements are with regard to the version of Solaris they need to be running on their system.What I mean is will the application that I build run correctly (with regard to the environment) on a customer system running Solaris 2.6 (2.51) etc..(I've found statements about applications developed on Solaris 2.6 running on Solaris 7, but nothing about the reverse case.)

[533 byte] By [RobChaddock] at [2007-11-25 23:40:58]