I am so stumped. Just purchased a wonderful Oregon 450 from here and wanted to webupdate it but it says "No Device Found. You may also need to set the inferface option on your GPS to Garmin host." It is on USB and is on Garmin. Then I put in batteries NIMH and now it goes off when I turn it on. I want to cache with my new toy and need help understanding why it is doing this. I got it last week from a poster on here and it was working so I went and got NIMH batteries - turns off. Is it something I accidentally set it to was wrong, I do not know. Can someone email me and help me. It won't let me download caches from geocaching.com as it won't recognize it. Thanx - I am nucacher wanting to become experienced cacher but will wait for someone to advise. I can be reached at paz1026@sbcglobal.net. - Frustrated Nucacher wanting to cache with new toy this weekend.