1. Open “Computer”
2. Click on “Map Network Drive” on the top bar
3. Select the drive letter you wish to use with iDisk.
4. In the folder name entry area you want to enter:
http://idisk.me.com/[yourusername]
for example: http://idisk.me.com/johnapp
5. Check the box marked as “Connect using different credentials”
6. Click FINISH.
7. Enter your me username and password and check the box to save the password.
Done!
To see your new drive go to “Computer” and you should be able to use it.