It looks like unicode. I don't know what Notepad++'s capabilities with unicode are now, but it used not to support it. Try searching the forums for the word unicode.
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Sandboxie saves it configuration to a .ini file but when I try viewing it with Notepad++, it looks like this:
http://img404.imageshack.us/img404/653/sshot4kx3.png
Is there a problem with my Notepad++ or can someone else confirm this?
It looks like unicode. I don't know what Notepad++'s capabilities with unicode are now, but it used not to support it. Try searching the forums for the word unicode.