Appropriate software for tungsten e2 palmOne

i just 'inherited' a tungsten e2 palm One. i just purchased the docking kit [charger, usb cable, and cradle]. i am basically a 'newbie' in the area of hand-helds. when i connect my palmOne to my desktop vai usb cable, my pc does find the new hardware, but cannot find the proper software. [i get the '?' and 'palm handheld' under 'other devices' in my device manager.] i have found a couple of sites offering software dowmloads, [but i would appreciate if you could recommend the best, free site], but i am not certain if i am restricted to the palm OS software, or if i can use pocket pc software with my palmOne. i intend to use it as an address book, wireless portable [if possible]], gps, and most of the functions that are already programed on it- although, i hope that
my desktop gives me complete access and control over adding, editing, and deleting items. thank you. -david