For those of us who are marks for anything electronic the Dec issue of 'Practical Sailor' has an article about Nav Software
that can be run on "Smart Phones".
programs reviewed are "Active Captain
Mobile ($20-50) for both Palm and windows. Memory Map PC ($100) and Ozi Explorer CE ($40) for windows based phones.
I downloaded 'Memory Map Navigator" to a Dell Axim PDA and am very pleased with online support - enough so that I will spring for the $100 pkg and get compatibility with both regular PC and the Win mobile. (Pocket PC version is $80).