A reminder: for the best MobileMe experience, you should use the latest versions of Mac OS X 10.5 Leopard (if you use a Mac), iTunes and MobileMe Control Panel (if you use a PC), and iPhone OS 3.0 (iPhone or iPod touch).

To get started, use iTunes to update your iPhone software to iPhone OS 3.0, and then follow these steps:

We also recommend setting up a Passcode Lock on your iPhone, so only you can turn the Find My iPhone feature on and off. Go to Settings and tap General followed by Passcode Lock.

If your iPhone goes missing you can log into me.com on any computer to access Find My iPhone (under Account) and display your iPhone's approximate location on a map, write a message to be displayed on its screen, and play a continuous sound for two minutes even if the iPhone is set to silent. Or if you fear the worst, you can initiate a remote wipe to permanently erase your personal data and restore the iPhone to its factory settings. Watch this video to see how it all works.

MobileMe members who use iCal on a Mac can publish calendars to MobileMe to share with friends and family. To publish an iCal calendar, simply click the calendar and select Publish from the Calendar menu. You can then send an email inviting other iCal users to subscribe.

Your friends and family can now subscribe to your published calendars and view them on their iPhone or iPod touch running iPhone OS 3.0. They simply view the invitation email on their device and tap the link to set up the subscription to the calendar. For more details on how to publish calendars to MobileMe and subscribe to them, please read this support article.

Find My iPhone can be found at me.com today, but you also need iPhone OS 3.0 (available on June 17) installed on your iPhone to use the feature.

You can learn more about Find My iPhone by visiting What's New for MobileMe.

Recent updates to Apple's Airport firmware enable you to use Back to My Mac to remotely access files stored on Time Capsule (or a hard disk attached to AirPort Extreme with 802.11n) from a Mac running OS X Leopard. The device's disk will appear on your Mac in the Shared section of the Finder sidebar when you're connected to the internet, and you can treat it as a personal remote file server, dragging files to and from it as needed.

To set up a device, Open AirPort Utility on your Mac, click Manual Setup, then click Advanced in the toolbar and select MobileMe. Enter your MobileMe member name and password and click update. For more detailed instructions download the Back to My Mac User's Guide.

Because the MobileMe Contacts web app has built-in support for vCard (.vcf files), the industry standard for exchanging address book data, it's easy to import contact information or export contacts to share with others. Use the Action menu (the gear icon) in the toolbar for access to the Import and Export vCard commands. By the way, you can include more than one contact in a single vCard file simply by selecting multiple contacts before you use the Export vCard command.

A reminder: For the best MobileMe experience, you should be using Mac OS X 10.5.6 Leopard (on a Mac), MobileMe Control Panel 1.3 (on a PC), and iPhone 2.2 Software or later (on iPhone or iPod touch).

A number of MobileMe members have asked if there's a way to use the new iDisk sharing feature to share multiple files at once. The answer is yes, it can be done easily using the Compress command in the iDisk web app. Here's how:

1) Select the files or folders you want to share. (To select multiple files hold down the Command key on a Mac or the Control key on a PC as you click on each one.)

2) Use the Actions menu via the Gear icon in the Toolbar, and select Compress items. This will automatically create a single compressed file named Archive.zip that contains your files or folders.

3) Share Archive.zip file just as you would any other iDisk file. (Before you share it, you can change the "Archive" part of the name to something more descriptive, but keep the .zip extension so the receiver's computer will know to decompress the files when the receiver opens it.)

The process is a simple matter of going to iDisk on me.com, selecting the file you want to share, and clicking the Share File button. This tutorial shows how easy it is.

Clicking a photo within a view zooms in on just that photo and provides arrows for navigating through the album one photo at a time. And if you've enabled downloading for an album, clicking the Download icon below the image will allow your viewers to download just that photo. The Download icon in the toolbar at the top allows visitors to download all the photos in the album. Finally, on an iPhone or iPod touch you (or a friend) can launch Safari and view Gallery albums in grid or slideshow then and there, right off the cloud and into your hand.