I made my own logbook using DataViz Smartlist Palm software. Smarlist is one of the most powerful relational database application on the Palm, provided with a PC companion and sync conduit. Automatic sync with MS Access or Excel is also possible. Powerful filters can extract most information needed by airline pilots.
If you find it difficult to make your own logbook with this program, I'll gladly send you my template.
Good luck.
http://www.dataviz.com/