I got so excited when I saw the Intellisync for Yahoo application and was severely disappointed when it refused to recognize my palm (zire 31) was connected to my computer. *sighs* A web search on yahoo said that I had to make sure that my hotsync channels were "properly" set up and nothing more. A quick email to yahoo authorities ended with a comment something like "we don't support this software except for faqs on the web"
I use the calenar on my palm almost exclusivelly. If I can't get that to sync with an online calendar then I'm not going to use any online calendar. *sighs*