How do I select another printer than default in javascript?

Hi, I’m trying to select which printer to print to when the print button is clicked in a pdf form. I have tried to find a way to set printer using javascript in Adobe LiveCycle. The reason I need this setting is that the print output must go to a printer in another room in the building an not to the default printer used by the local computer.
Since Adobe uses javascript, does anyone have any suggestions on how to do this?

I can’t let the user select printer using a dialog box.

Larzzer