2nd Monitor goes blank

Trying to setup 2nd monitor on Toshiba Satellite Pro A11 Notebook. As soon as I boot up the 2nd monitor (TFT LCD Monitor) it comes on with the Windows logo and then goes blank. How can I get it to stay on? The goal here is to expand my desktop to do work on graphics.Am Using Windows Xp. connected via VGA ports on both Notebook and new monitor.This Notebook is not online and never has been.