2. Uninstall completely iTunes 11 via the programs and features services
3. install iTunes 10 which you have downloaded from the above link
4. Once you attempt to open iTunes 10 you will get the error mentioned above and this is how you will bypass the error.
> after installing and starting iTunes, once you launch your iTunes 10 you will see the following errors “The file iTunes library.itl” cannot be read because it was created by a newer version of iTunes (this simply means you will not be able to run iTunes 10 until you follow my steps.