I wouldn't waste my time.... I waited months for Delorme to make Topo 6 WM5 compatible only to find out that when the program TRIES to run all it really does is turn your PDA or Smartphone into a brick. That simple... It won't function.... You can go to the Delorme site and check out their forum....Nothing but complaints... And they don't care. Because now they have their own handheld unit that runs the program and they want you to buy it instead.
Try Backcountrynavigator instead. It's free to try for 10 days! And there is an excellent support system already in place.
Main - BackCountry Navigator
And when you decide to buy it.... It's only $30!!