Version Interoperability...

[Ochs, Duane]

Hi all,
Is there a rule of thumb for version interoperability ?
I'm prepping to upgrade my three TSM servers to 5.5.1.1 from 5.4.3.0
 
I'm going through and upgrading my clients to 5.5.*.* and found some W2K
boxes running 5.2.2 and some AIX 5.2 boxes running 5.2.2 .
 
Neither of those are listed as being supported by the client TSM version
of 5.5. 
Any suggestions for interoperability before I start researching the last
TSM version that supported W2K and AIX 5.2.2?
 
Thanks,
Duane