port from squeak to vw

Hi all, it's possible to import a Squeak .cs file with some classes into a 
VisualWorks 7.3 non commercial image, to realize a simple port of an 
application?
I have opened a File Browser in VW and selected  the .cs file but the file in 
button is disabled.
I work  on Linux i386 version and  now i'm testing vw on Linux FC5 on intel 
processor.
Thanks.
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Davide Arrigo