Is it possible to link (run as one machine) my G5 PowerPC OSX 10.4.6 machine to my G5 INTEL running OSX 10.6.x or higher simultaneously? I want to run differing versions of OS X, and be able to use my Classic apps while still keeping up with Flash Player requirements. How can this be done?
You can't really join seamlessly two separate macs, and have it all just work out of the box, eg having one Intel based Mac that can run the Lastest OS's and One older PowerPC Mac that can run all the Classic OS's and have it all work at the same time merged into a single OS where all apps just run together. Something like that may be theoretically possible but it has never been done, and would require Apples full support to do so.
So in other words Paying someone to port your old classic software to the latest version of OS X would probably be less expensive than the solution necessary for merging two independent operating systems and architectures into one, so lets not even go there any further.
The good news is that there are options that will allow you to independently connect two macs or emulate a classic mac enviroment within an Intel mac.