Psiconv can translate Psion Word files to HTML (either 3.2 or 4.0) or plain
text, and it can translate Psion Sketch and MBM files to almost any graphic
format. It is not yet perfect, but it can easily be extended. Psiconv-0.6.1
includes the description of the Psion file formats, version 2.5.

the Psion file formats description:
	http://huizen.dds.nl/~frodol/psiconv/html/Index.html