I am a developer of the PocketStackz
The problem you see can be because of the Windows Mobile 5.0.
PocketStackz has not been tested with this OS yet.
On the PocketPC 2003 and PocketPC 2003 SE it works just fine
and the linefeeds are handled correctly.
Could you please send me a szm file at <mobile at stackz.com>
where you see the squares instead of the linefeeds?
Currently I am working on the next version and your file can help me.