Yes I had the same problem. I upgraded to the Medtronic 522 CGMS system that has the carelink online system. I was a MAC user in the past and do not have a PC in the house - and was AMAZED at the lack of support for MACs within Minimed!!! They had NO IDEA other then to say "no". They are not sure if development is in progress. How can such a large and such an international company be so ignorant to the world of MACs with their software!? So to say the least, I have made a hefty investement for my new insulin pump, and can not utilise the online software to analyse the data, because I use a MAC. I calles technical support and they said to install Windows XP on my MACbook --> I choose MAC years ago for a reason --> to get away from PC windows!!
Either way, the technical support persons told me to run Windows XP on my Macbook (intel chip) - and I may need a serial adaptor for the USB port, something that MAC/apple sells. It seems they feel by installing Windows XP on the Macintel, the software will work - BUT I am still in the process of trying. I already spent the $$$$ on the pump - to cough up more for the software and cables, is not going to happen yet......but I will keep posted.