I did little research on these three phones and found nothing about Windows Live Calender but I would better to buy Windows Mobile based phone from HTC or Palm.

I also found this info on blackberry maybe it helps "Just add an invitee to your calendar vent/appointment. use a different email address to the hotmail account the calendar is on.
setup your blackberry to also retrieve and sync from this additional email address and hey as long as you have this calendar under options selected you will receive the calendar entries.

remember you have to add the email address as an invitee to each calendar event in hotmail for this to work"
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I'd suggest going with a Blackberry for any of the Wndows-based applications you'd be running. Microsoft seems to dislike allowing outside companies access to it's brands.

On that note, however, I find the Google Phone much more user friendly with the full keyboard and track-ball. The Blackberry storm has a very odd mechanism where you have to press quite hard on the 'touch' screen in order to type.
Source(s):
Personal experience.

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i have a Symbian (Nokia n95) that syncs windows live calendar over bluetooth when ever i am near my computer works very well.
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