I have tried to download a software, ARC300, but I got a screen that just baffled me with out any instructions,. I unistalled and now wondering if this is exceptionely, hard or I am not seeing what they claim, when trying to program a Pro 164. Looks like the download for drivers worked, using XP. I am at a loss. Where do the frequencies I want to program show up. Where is the help section. I can't find out where my frequencies downloads come from unless I download premium RR.