Thanks, Mike. That explains.
I have 64-bit OS Windows 7. You state that QImage is "Fully supported on all Windows versions from Windows XP through Windows 7 x64". Do you have x64 version of QImage?

Fred, my images are computer generated. High resolution is my requirement plus I want to print 19''x16'' output. It gives me 
more than 2GB.

Thank you both. I hope I can solve my problem by using QImage.
Olga

Thank you very much Fred for your response. I did Analyze Current Settings as you guided.
Got a popup that states: Start: 2000MB Addl: 1638 MB, Now: 2000MG. So, only 2 GB is available.
At the same time my PC RAM 6 GB, 64-bit OS, and the disk has 297 GB free space. The question is
how to make this memory available for QImage?

Thanks again. Olga

Is there any size limitation? I downloaded QIMAGE v2010.209 and it cannot see large images.
I have 64-bit Windows OS , RAM is 6 GB.
Thank you