here is a cab i made that installs to \program files\sprintnav with the exe renamed to sprintnav.exe if you previously have sprintnav installed, this also deletes the preferences.bin file which contains your login info as the new telenav program uses a file named app_pref.bin and the old preferences.bin prevents you from logging in. doing this makes it unnecessary to delete the sprintnav program file so you can just install this cab, log in, and enjoy.
http://www.4shared.com/file/16893973...by_DomSim.html