I would agree and started the process by using Easy Duplicate Finder - a free peice of software

- which scans folder and gives you the option to rename them or move them to another folder hich I did (backups - just incase I deleted the wrong file

)
I now have all my books in folder abc, def,etc. - you get the idea.
Sadly I assumed that I would be able to import the folder group at a time which Calibre doesn't seem to be able to do (like media Monkey or god forbid - windows media player). - As mentioned by Kovidgoyal above (by the way Kovid this isn't a dig I think your program is brill

)
I think it means the hard road for me I just don't have them in smaller batches - I used to have them all in folder by author - but I use Vista and going up and down the folders was annoying me - so i gathered them all in to larger folder groups - and this feels much better.
Has anyone any other ideas about software that I could examine the folders from - I am even considering using the sony software - which is crap for a disabled users by the way - no keyboard control - but hey that is off topic - sorry about that.