I would give you a hand with transferring if you want. Honestly if it were a big mess and it were bothering you what I would do is start perming mules then contact someone trustworthy on the forums and do it in stages.
Start by creating a temp muling account, and put a mule on there for each general type of item. (One for weapons, one for armor, one for Jewelry etc). Then for the ones that you have enough items, create an account for that item type (Weapons account with Swords, Maces, etc.)
I almost never realm down this way because I minimize my character swapping, while still maintaining awesome organization. At most I have to get 8 mules to completely clean out a character with a minimum of organization, and when that mule gets full its another 8 at most to sort it the rest of the way.
Yes, I am an ocd packrat. LOL.
As for image viewer, you don't need a program. Image viewer comes with windows
It seems like it would be an easy way to catalog your things, without creating new mules / moving a bunch around.