How to sync calendars to/from iPad to iPod Touch?

[dbrown]

I currently have an iPad. I'd really like to get an iPod Touch so I can have everything with me when carrying the iPad isn't feasible but how do I get the calendars to sync to each other?

I checked out Google Calendar but it only syncs with Outlook, which syncs with the iPad but does Outlook and iTunes need to be on the same computer to do this? Because right now they aren't, and I really don't want to buy MS Office for my play computer, which has iTunes on it, just to sync calendars with Outlook.
But I definitely wouldn't mind buying an app if I need to or hook up to other cloud software than Google calendar.

I'm so confused with all of this it's not even funny. Is there a simple way to sync both devices to each other? I see MobileMe is not taking any new subscriptions as of June 6, 2011 so I missed that opportunity by 10 days.

I hope this makes sense because the whole thing is clear as mud to me. Any advice is appreciated.

Orange Dolphin

[dbrown]

I should probably add that all of my computers are Windows XP.