(Found this in a Search)
If you are looking for a way to read Palm "Doc" files on BlackBerry, there's now a way! (Not Word documents, but Palm "Doc" format files) The JEDI reader: http://www.beiks.net/DShowTitle.asp?TID=24
It's a J2ME/MIDP eBook reader for java phones. J2ME/MIDP midlet software works on BlackBerries, you can actually use Motorola/Nokia/Sony/Siemens java phone apps on a BlackBerry! more info
To download the trial version, enter this web address on your BlackBerry: http://www.beiks.net/wap/ShowTitle.asp?TID=24
It actually works from my tests. You do have to configure it by selecting 'Setup' after you've added a www.beiks.net
account. Then, select "Update" on the eBook (the default one "JEDI Reader Help") to download it to your BlackBerry. Then you can open it. There are some bugs with this software on the BlackBerry, but it does manage to read the Palm Doc files.
Also, to copy PDF files to your BlackBerry and view them from there, you can use eFile from Dynoplex
and use it as a document viewer. It has the ability to view PDF, DOC and XLS files. Or you can email the PDF / Excel / Word files to your BlackBerry and view them that way.