Windows 7: Moving photos around folder

In window xp I used the thumbnails view and I was able to click on a photo or photos and drag them around a folder and drop them inbetween another photo when a black vertical bar appears. This way I could organise the group of photos in an order of preference.
Then I would highlight them all and rename the first one, which would rename them all the same except for a (1) or (2) etc at the end of the name to distinguish it.
Now. In windows 7 I am able to highlight them all and rename, that is not the issue. The problem is that when I drag a photo around a folder, the black bar does not appear to let me drop it in between other photos.
I know this sounds trivial and I could rename the photos individually so they would sort in alphabetical or numerical order etc, but I have thousands of pictures in hundreds of folders so it takes up too much time.
Any help greatly appreciated. Thanks.

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Neutron16 you are a star. I had read a good few posts of people furious about this particular problem on windows 7 and thought there was no way to fix it. I said I'd have one last look and seen your reply. Delighted now. I don't know what you gain by helping people or if it's your job, but either way, I love you!