Grouping file extensions from a folder

  ragbag 18:50 06 Jun 2005

I have a folder which contains several sub-folders on my external hard drive. These hold multiple photos of a subject taken over 5 years (grouped from back-up CDs and DVDs. The file extentions are: .jpg - .tif - .nef (raw) - .tif I would like to simplify matters and just have 4 sub-folders:
How can I gather each group together to achieve this?
Regards, Ragbag
(Intel Pentium M 1.6 GB - 1 GB RAM - Windows XP)

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