Please help me with my Cloud Confusion

[Internaut]

Here's the problem (or none problem). My iTunes account greatly predates my Mac ownership and Mobile Me account. My iTunes username is actually a longstanding AOL email address. Would this cause issues with me migrating my Mobile Me account and calendar to the cloud? Or would migrating Mobile Me to the cloud cause problems with me migrating the iTunes stuff to the cloud?

Sorry to be a complete luddite but the iCloud has me all confused.......

 

[Internaut]

Ok, done a bit of Googling and it seems no different to what I do already, allowing for separate IDs for iTunes and iCloud.....