You can also try/purchase a cool utility called Snagit from techsmith.com (same makers of camstudio) which allows quick, easy and variable screen captures...
Corel Draw has a little known utility bundled with it called Corel Capture. You can set several different ways to capture. I use it all the time, because it lets me do a marquee select to capture just the area that I want.
On my Dell Inspiron I need to ensure "Num Lock" is on. Just a thought. When I first did the Print Screen thing - nothing happened - except my language got even worse!