Thank you so much for the kind words and encouragement about my pbase gallery http://www.pbase.com/chris67. As to what equipment I brought to Antarctica...well... My bags were lost by united so I had VERY limited photo gear. Essentially, the photos were taken by a Canon 1ds Mark II and either the Canon 24-70 or the Zeiss Distagon 21MM lens....all using UV filters and occasional polarizing filters.
As to the photo services, I use both Smugmug and pbase. Smugmug is preferred for printing (in fact pbase does not offer printing) and pbase for the gallery and community features. Both are inexpensive and easy to use.