can't rearrange photos in windows explorer or my computer

windows 7 sorts them by filename in alphanumeric ascending order left to right according to the UNICODE character set. look in the charmap program (use Arial font) to see in what order these characters are sorted.
you can choose detaill mode and click on the name column to sort them in reverse order, or sort them by date. if you want them in a specific order, simply rename the files with a consistent numeric prefix on them such as:

000-
001-
002-
003-
004-
005-
006-
007-
008-
009-
010-
011-
etc.

hit the F5 key to refresh. this will show the result of your changes (re-ordering). if you have more than 1000 pictures, use the appropriate number of digits.