Just wanted to tell you guys that it's possible to convert Oxford Dictionary of English for iPhone to a Mobipocket dictionary so that you can use it with your reader.
When you browse your iPod/iPhone's files (with iPhoneBrowser) you'll see this dictionary's file called app.db.
It's a SQLite 3 database and can be easily converted to a CSV file with
http://www.sqlite.org/download.html.
Then there's a lot of work editing this CSV like deleting not needed columns and turning it to a tabfile.
Then you need to replace non-standard tags to proper HTML ones (like <inf> to <b> etc.)
I guess that all other iPhone dictionaries by Handmark are also convertable in this way.