Migration Assistant can't find External HD on MacBook Pro Mid-2012

Question

Hi, I have a MacBook Pro Mid-2012 running OS X Mountain Lion 10.8.2 and I am trying to use Migration Assistant to transfer Time Machine backups that are on my external hard drive, that I backed up from my old MacBook Mid-2010. The problem I am having is that Migration Assistant can't find my external hard drive. My MacBook Pro can find it when I plug it in (I see it in Finder), but Migration Assistant can't. Can anyone help or should I go to the Apple Store?  I need help with this problem as soon as possible.
Thanks in advance,
- Daniel 

Answer 1

Since no one replied I figured out how to do it myself.
1.) First I plugged in my external hard drive with my Time Machine backups on them, then I opened Finder and click on my external hard drive under devices.
2.) Next I clicked on and opened the folder named "Backups.backupdb"
3.) Once inside that folder I could see folders with the backups from Time Machine and all of the folders names were the date I backed up that backup. I clicked and opended the lastest backup folder.
4.) Inside that folder, I clicked and opened the folder named "Macintosh HD"
5.) Inside that folder, I clicked and opended the folder named "Users"
6.) Inside that folder, I clicked and opended the folder named "Daniel" which was my Username on my previous Mac.
7.) Finally I could see and access all my folders from my Time Machine backups from my previous Mac.
Keep in mind this is only helpful if you are trying to access old backups (backed up from another Mac) on a new or different Mac. (Sorry for the blurry images)
Hope this somehow helps someone else,
- Daniel 