Remember all those cheap logging GPS units we posted? - Andy picked up a Wintec, but the supplied software was Windows only - so he released a patch for GPSBabel that supports the WBT-200 on all platforms GPS-Babel runs on and he has also tracked down a USB driver for it that works on Macs. Link.
http://blog.makezine.com/archive/2006/06/using_the_wintec_wbt200_g.html