Syncing Addresses, Calendar, & Tasks with Windows?

DJDaveET asks: "I'm a Windows XP user who has embraced OS X as an additional tool in my arsenal. It's a wonderful OS and the machine is a joy to use. My one major problem is thus -- currently, I'm a heavy Outlook user on my two Windows boxes. I use Outlook to manage my email, my contacts, my tasks, my calendar, etc. I currently use the fusionOne service to keep those two computers and my Samsung I300 phone all in sync with one another. I need to have that same information on my PowerBook. I don't really care what applications they go into, as long as they're all available. Integrated would be wonderful. I'm not in a position to be able to completely abandon my Windows boxes, so I'd like the Mac to play well with the others. How can I keep the data all in sync? What apps should I use on the Mac for the appropriate parts -- email, tasks, calendar, contacts, etc?"