Hi Jim. Welcome to justanswer.
Have you downloaded the compatible drivers?
Jim I am sorry but the printer is not compatible with your OS. It is compatible with 10.7 and higher.
You need to upgrade your Mac's operating system.
Do you remember when did you buy your mac
How much RAM does your system have?
Sorry for the delay, there was a glitch at my end. For installing Yosemite, you need 2 GB RAM, which you have and 8 GB available storage.
Go to App store
Search OS X Yosemite
Do you see it in the app store?
Jim you should upgrade to El Capitan as it is the latest one. Upgrade will be free and quite easy. If you want Remote assistnace then either make a request for it or accept the proposal and I will do it for you.
Accept the offer request that I am sending
Click the request to accept it
CLICK HERE and then press I Agree. A file will get downloaded. Just open/run that file to start the remote desktop session.
Click this link. A new page will open. Press I Agree on that page. A file will download. Open that file so that I can connect to you.
Are you facing any difficulty in connecting to the remote desktop session?
Click this link.
Then you will see I Agree written in green box. When you press it, a file will download (If it doesn`t download then click Download there on the page). Now you have to open that file.
The name of the downloaded file will be Elsinore.screenconnect. Check in the download section. Once you open it, I will be connected to you.
Try this link and open the file which gets downloaded by this link