Re-associating previously purchased iTunes apps, etc with different Apple ID?

Question

, I want to get a brand new Apple ID to replace my current MobileMe address which I will convert to iCloud just for transition purposes and until my contacts update to my new email. I want to be able to ultimately eliminate my old .mac and .me address altogether and never see it again (divorce situation - see previous post)
Anyway, a snag, of course, is all my iTunes purchases. I want to benefit from iCloud wireless syncing but all my apps (Mac AppStore too) are tied to my current .me AppleID which can't be simply changed.
Since all the apps, music, etc, reside on my computer (which has to have the long & short name changed too) - would the following work:
1. Backup iPhone 4 and iPad 2
2.  Create a new username on my computer (the name I intend to have as my only name once all is smoothly transferred)
3.  Create new iCloud account with new .me address
4.  Configure iPhone 4 and iPad to associate with new .me address (where exactly?)
5.   Signed in as new username, Open a new iTunes library on my computer and import everything (apps, music, shows, etc) then consolidate it to be housed only  in the new username
***also load to affiliate with new computer username (where?) the last iPhone 4 and iPad 2 backups
6.  Re-sync (wired) iPhone and iPad to new library.
Will my apps, etc then be "in the cloud" and associated with my new .me address so I can wirelessly sync them as if I never changed my name??
What specific steps should I take and in what order should they be?
And if this doesn't work, any ideas that will?  Same question then for Mac app store purchases.
I just want MY iDentity and not have to see my married name all over my iPhone, iPad and iMac, everyday.  [email protected] rather than [email protected]
THANK YOU!

Answer 1

Please try each of the following steps you haven't already taken, until the issue is resolved. After each step, relaunch the App Store and try again.
1. Follow the instructions in the Apple Support article linked below:
Mac App Store: Cannot update App Store purchases or updates do not seem available
2. If any App Store purchases were made under a different Apple ID, or if the bundled iLife applications were accepted under a different ID, sign in to the App Store with that ID to update.
3. Alternatively, delete the probem applications and re-download them with the ID you're using now. If you haven't already purchased them with that ID, you'll have to do that first, because purchases can't be transferred from one account to another.
4. Select the Purchased tab in the App Store window. If you see an item in the list marked "You have 3 apps to accept," click Accept.
5. Triple-click the line below to select it:
/Library/Caches/com.apple.appstore/adoption.plist
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu. A Finder window may open with a file selected. If it does, delete the selected file. You may be prompted for your login password.
Then repeat step 4.
6. Select
Store ▹ View My Account
from the App Store menu bar, then select View hidden purchases. If you're trying to update any hidden purchases, unhide them.
7. Launch iTunes and select
Store ▹ Authorize This Computer
from the menu bar.
8. If you've moved any App Store apps out of the applications folder, or into a subfolder, put them back. Never move or copy those applications.
9. Contact Account and Billing Support on this page:
Apple - Mac App Store - Contact Support