Custom Commands - Where?

Still using Rhino v4. Had to move to a new computer. Have everything customized the same as the old computer, except for a few custom commands and my custom line types. Where are these files located? Thanks

Assuming you are not talking about external scripts, your custom commands are in the other Rhino v4 installation. If you still are able to run that one, you can export the options.

As for the custom line types, these are probably found in your default template.