Fly to 6 Continents in Style
But what about that elusive 7th continent? Here's one possible way to check that off your list. Find a research lab that is doing Antarctic Research and apply to join them as a volunteer. There are often positions for volunteers. As you can imagine, these are quite popular so it may be a 
difficult route, but it seems like there is always a need for people with electronics and computer skills. There are also job openings, eg http://www.usap.gov/jobsAndOpportunities/.It may cost you your time, but possibly not much else. I went to Palmer Station as a volunteer on an oceanographic research cruise and was able to use my travel stipend to stay in Chile for a few weeks afterward. For all my hard work I also received the Antarctic Service Medal [1]. (Not exactly sure why since I was not affiliated with the Military!). Definitely one of the best deals of my life.[1] http://en.wikipedia.org/wiki/Antarctica_Service_Medal