I have not that much experience with CrEme although I know that some large WM installs use that.
I can do an AWT app in netbeans and run it successfully on a device.
Look for the netbeans mobility pack to start with CrEme and netbeans.
OTOH you can go on with eclipse. Where did you get the swt files from? I found one source here http://davy.preuveneers.be/phoneme/?q=node/15.
Here is one source I found for an intro to SWT on WM: http://www.eclipse.org/articles/Article-small-cup-of-swt/pocket-PC.html