Hello,
You can use Manage Windows Control command (MWC) to extract data from a desktop application. MWC allows you to directly access Windows UI objects like Text Box, Drop Down, List Box, Radio buttons and more. Using 'Get Text' option of MWC you can extract text that cannot be selected and copied using standard clipboard operations.
When you use MWC, not only your task is independent of screen coordinates and screen resolution, but it can also run in background.
Please find demo on Manage Windows Control (MWC) at,
http://www.tethyssolutions.com/MWC_Demo.html
Hope that helps.