Grabbed my Zodiac out of mothballs this week. Very disappointed that there is now very little online for it. Always used to use Zodiacgamer as a great source of information, and I occasionally posted on Tapland until not long before it closed. Very grateful that Zodiac France is still going, and there is the openhandhelds software archive!
I've had my Zodiac for 9 years and it is still working fairly well. I'm on my fourth battery, the rubber clips to hold the stylus have fallen off, the shoulder triggers are slowly disintegrating and its covered in dents and scratches but it still works perfectly.
I managed to source 2 x 4GB non-SDHC cards a few years ago, however I find they crash a lot when running software from them. Still good for music though. I've got 1 full of music and a 1GB card for games and ebooks.