I got my J Edit software working on Windows 7 64 bit by doing the following:
1) Right-click on the installer (JEdit12a.exe) and choose "Run as Administrator"
2) Follow the instructions to install the program.
3) When prompted to restart, go ahead and restart.
4) To start the program, right click on the Start Menu item "Johnson J-edit" and choose "Run as administrator."
5) Edit away...
To set up the start menu item so you don't have to always right-click to "Run as adminstrator" do the following:
1) Click Start menu and right-click on the menu item "Johnson J-edit" and choose "Properties"
2) Click on the "Advanced" tab
3) Check the box labeled "Run as administrator"
4) Click "OK"
5) Click "OK" on the Properties window.
Now it will run as administrator every time.
So glad I got it working. Woo Hoo! I hope this helps others.