I have just bought a Macbook Pro and sync data from my old version onto the new one...However when I tried opening the mail client...Message window does not appear.

Question

I have just bought a Macbook Pro and sync data from my old version onto the new one...However when I tried opening the mail client...Message window does not appear. The old Macbook Pro I was using used Snow Leopard. Now with the new it is a Lion. Toruble now when I click onto new message window I have the spinning icon which show it is trying to load. However it fails and Im left with having to Force Quit it. How can I resolve this problem

Answer 1

Tunes: How to move [or copy] your music to a new computer [or another drive] - http://support.apple.com/kb/HT4527
Quick answer if you use iTunes default preferences settings:  Copy the entire iTunes folder (and in doing so all its subfolders and files) intact to the other drive.  Start iTunes with the option (shift on Windows) key held down and guide it to the new location of the library.
Downloading (using iOS or computer) past purchases from the App Store, iBookstore, and iTunes Store - http://support.apple.com/kb/ht2519 - enabled with iTunes 10.3 and newer; not available in all countries; apps, books (not audiobooks), music, t.v. shows, and movies (some - not all studios have permitted this). Movies currently available in the USA only. Downloading previously purchased movies and TV shows requires iTunes 10.6 or later.  Discontinued items not available. For items not included in the iCloud list (e.g., ringtones), or locations or computer systems where iCloud is not (yet?) available, you only get one download per fee paid.  Apple notes it is your responsibility to back up your purchases.
Select the store on the left side of iTunes.
Click on Purchased on the right side under Quick Links.
You can re-download your available previous purchases.