Hey Pre community not sure if anyone has done this yet just thought since i set up a pretty sweet system i would share it with the rest of the world.
If you have vista/win 7 (i set it up on both):
-Sign up for google calendars (free )
-Link your Palm pre to the google calendars (free and easy)
-Download Google Calendars for the sidebar (free)
Now you can create calendar entries from the sidebar that auto sync to the pre from there

Its actually very cool how you enter entries aswell.
The calendar app on the sidebar displays each entry in a nice lil column view aswell and you can throw different themes on it.
For a nice lil touch turn the opacity down on all of the gadgets on the sidebar down to 20% it looks very plush then you just mouse over them and they light up.
**Optional and also tested**
If you have and use outlook you can download and install:
"Google Calendar Sync 0.9.3.5"
And set it up to sync the outlook calendar with a sync time of every 10 min (only for regular outlook users on a desktop for battery reasons)
or you can set it up for longer periods
It doesn't really matter because all you have to do whether or not outlook is open or not all you have to do is right click the icon on the right side of the taskbar, and click sync and it does the job.
By setting this up if you have all of this running at the same time it basically keeps all of your calenders working together as one and you don't have to enter it into all of them all you have to do is enter it into one and it syncs them all.
Im not banking on the fact that someone hasn't already figured this out just figured it out on my own and i couldn't find it in anything else so thought i would share it with everyone else