Hmmmm. There are enough guru's that visit these forums I think it might be worth seeing if one of them could help you out with your GPSr before selling it. I like to tinker on that kind of stuff when I know I can't damage it worse that it already is; I took Haffy's Vista apart and actually managed to get it back together working. Of course Jupiter was aligned with Neptune and the solar flares weren't too bad that day either.