My old Palm Treo 700p - despite its flaws - had a great desktop manager that included a calendar feature you could add to via your PC and sync with your handheld.
It appears BlackBerry has something similar, but it works with Outlook - something my company doesn't use (they use FirstClass for e-mail and calendaring).
Is there a way to add/remove/revise calendar events via the desktop manager OTHER than Outlook?