Can someone help me out there with my Earthmate PN-20. I bought the unit last year for geo-caching while on vacation. It really worked slick, I downloaded all my geo-caches we were interested in on the unit prior to leaving on vacation. That really works great except with one problem, multi-caches. I have not been able to figure out how to enter coordinates manually into the unit. After an hour of pushing every button on the unit we gave up on locating the second cache. I've been playing with this unit off and on for over a week now and have not been able to figure it out..... how do I enter manually the coordinates? I would appreciate any and all help especially the exact procedure for doing so, thanks in advance.