Mac – View Time Machine backup drive on Windows 7

I would suggest using Mac Drive by Mediafour: http://www.mediafour.com/products/macdrive

I've used their product for years and it has always been rock solid. I'd say at $49.99, it is reasonably priced too. And honestly, you may find a free solution, but to me, data integrity will always trump a slight to the wallet.

That is if you absolutely want one partition, but considering that one is a dedicated Time Machine repository, I would advise against it. While Time Machine makes a simple folder with all the backups (Backups.backupdb), it is ill-advised to store anything else on that particular partition. I know people that do it without problems, and all Apple says about the practice is the following:

Note: Time Machine works best if you use your backup disk only for Time Machine backups. If you keep files on your backup disk, Time Machine won’t back up those files, and the space available for Time Machine backups will be reduced.

But again, it's just good to keep things separate in my opinion. I'm not one for arbitrary compartmentalization, but in the case of backups, maybe letting them have their own room might not be such a bad thing.

If you are running Lion, iCloud, launching in October 2011, will soon provide cloud-based back up for calendar information.

To manually backup iCal entries, Apple recommends that you either

• Save an iCal Archive on your hard drive (File » Export » iCal Archive...)
• or Export an individual calendar to a file on your hard drive (use this method for any CalDAV calendars) (File » Export » Export...)

To protect against hard drive failure, copy the resulting files onto external media.

If you wanted to sidestep the Apple recommended process, and simply back up a single folder, it appears your calendar data files are stored in ~/Library/Calendars

Additionally, Google provides instructions for how to sync iCal with Google Calendar.