ml> this question is kinda backwards... 32 bit software will run on 64
 ml> bit CPUs but the OS might be designed to require the provision of
 ml> 32 bit LIBs and "thunking" capabilities... the only 64 bit CPU that
 ml> i'm aware, and IIRC, that will NOT do this is the intel itanium 

[EDIT] add "that will NOT do this" to the above line...

 ml> (again, i *think*)... if that's the right one, then it requires 
 ml> the OS to provide the glue...

 ml> so the real answer is "it depends" ;)

still :)

)\/(ark