Not yet, I haven't gotten around to buying the cable yet. On sunday I plan on calling around some of my local computer/ electronics stores to see if they carry it. I don't mind the $10 price which seems to be the norm on Ebay, but I do mind the extra $4 (on average) for the shipping. *btw, anyone who has an extra cable out there that wants to sell it let me know! *
From what I've heard, however, I do not think it's a complicated process to download the waypoints to the unit. I believe that once you plug it in, and click the "download waypoint" button on the cache, you just choose your unit as destination, and done. So far I've been inputing the data it by hand, a little tedious, but it's good practice with the controls.
Cheers, K.