I may have some more information for you. It depends on what information you already have. This would not be an issue, were it not for the way URC got trashed several years ago in flame wars over information.

PM me the URL of the page you're talking about or send me the contents of the page. If I can help, I will.

There's a big however, though: it seems like you have the information needed to do what you want to do, but you can't make it happen. That would be the signal to me that you need to hire a URC installer to make these file changes.