...You can transfer files in the semi-standard xpf format, supported by some other crossword-editing software.
There's also a completely portable random crossword generator. It's an independent program, but shares a lot of code with Crossword Designer.
Text File Codepage Converter for the Windows command line
...The C source code is available in the "src" directory. Just click on the "Files" tab.
Regardless if you have or don't have a SourceForge account - whenever you have questions about CONVERTCP or you want to give feedback then you are welcome to post it in the forum. Click on the "Discussion" tab.