Hi Jim, you can achieve your goal with help of NoMachine for Linux package installed on your Ubuntu and NoMachine for Windows
package on your Windows computer.
If your Ubuntu machine doesn’t have X running please remember to check our instructions for headless servers available at:
https://www.nomachine.com/AR10K00710
Can you provide more details about what you had problems with? You say you tried installing without success. It would be useful to know what difficulties you had so we can evaluate what improvements are required.