kicken, are you the same kicken from DALnet #php ?
lloydie-t, I'm getting a little more confused as the thread goes on, but here is what I gather from what you are trying to do.
Someone goes to your page, and you have a pop-up window that lists different customers and has a link that people can click. When the click that link, it reload the main window w/ that customers information. Doing this, you'd have a setup like this kinda.
First page, Main window:
//To open the popup
//Do whatever you need to get the customer information, make a link like this to reload the main window.
To make a close link in the popup, you can do this:
If I'm wrong in my understanding, please let know and maybe give a few more details.