Just got a new GREPSR300. im having nothing but truble w/ the software, cant seem to pull up the instructions ..... Im running a Mac w/ windows XP, so it should work? Like the scanner, but Im half tempted to toss this whole mess of the hill..... Ive figured out how to load VHF on to it, but Im in the dark on 800megs, . Would like to con fig this unit mainly for 800meg fire groups...... I have had scanners most of my life, but they were crystal units and old Regency raidos... Im a bit of a idiot when it comes to computers!! Please dont beat me up too bad , but I could REALLY need some help here!!