Motorola V3 RAZR syncing. Mac and Windows


I've got got my grubby mits on a V3. I tried syncing it up with my ibook, and it worked fine. I've got a funny setup though, so any ideas if I can do this:

Home = Ibook
Phone = RAZR
Work = WinXP (Running Lotus Notes)

I spend most of my time sitting in front of my PC at work, so my Lotus Notes Calender is my main 'master' calender. I basically want to have a opy of this calender on my phone (I'm hoping the motorola softare will deal with this), but I would also like to migrate this calender form my phone to iCal.
I couldn't find anything in iSync that would allow me to sync from the phone to iCal, instead of the default, mac to phone. Is there any software out there that will allow me to do this? Ideally merging, not overwriting.