Renumbering image sequences:

Image sequences can be numbered in different ways:

The most common are:
img.#

img.1
img.2
img.3
...

 img.####

img.0001
img.0002
img.0003
...

 img#.ext

img1.iff
img2.iff
img3.iff
...

 img####.ext

img0001.iff
img0002.iff
img0003.iff
...

 img.#.ext

img.1.iff
img.2.iff
img.3.iff
...

 img.####.ext

img.0001.ext
img.0002.ext
img.0003.ext
....

Unfortunately not all software supports all formats, which might result in the order being messed up or the images not being recognized as a sequence at all.
(if just all programs handeled sequences as well as Composer...)
 

Ok but what do you do if you need a different numbering format?

On IRIX/Unix:
There's a utility called Rhea available freely at http://www.highend3d.com/tools/#unixtools
Or the shellscript Renum free at http://www.highend3d.com/tools/#shell
Or you can do your own shellscript its actually not too bad.

On Windows:
I reccomend Siliwin, available freely at http://www.visionquestdesign.com/ this wonderful tool has saved the day for many people.
Other possibilities are:
Rname-it and Sequence911available freely at http://www.highend3d.com/tools/#wintools