How to get Windows Adobe Web Premium CS3 to run on a Mac? I spent about $1,600 for Adobe Web Premium cs3 (Windows version) back in the day. How can I get this to run on my Mac without having to buy a Mac license?

Sorry, I refuse to pay a subscription for new versions of stuff I bought and it still does the job.
The only way to do this is to pay for a Windows license and either dual boot or run in an emulator like Parallels or VMWare. Even if you could get trade for a Mac-specific version of the software you bought, CS3 isn't going to work well on anything other than older versions of OS X.