TSGL: Software for sorting & re-numbering pictures

[Tilman Brandl]

Hi,

I'm searching for software with good capabilities for handling / sorting/ 
creating slide shows.

Background: On our Chicago to Tucson tour last summer I gathered around 500 
photographs - using:

1- a small digital camera which produced numbered pics, containing exif-data 
(dates).
2- my heavy SLR which produced pics with strange composite numbers after 
digitizing. (no dates)

Back home I made a quick selection from all the pics, cat 1. & cat. 2 and 
created new numbers for them.

My problem: I need to reorder some of the pics and I also have edited 
versions of several of them which I need to insert in specific positions. I 
could rename again, leaving space for adding new and re-sorted pictures - 
for instance like this: us07-pic-0001, us07-pic-0003 etc. (all are *.jpg). 
It can be done with what I have at hand. But ...

...is there any software that would be helpful in sorting and renumbering 
slideshows according to the new manual sort order? I use Irfanview for 
checking Exif dates, and my file manager that's pretty good with renaming.

I would be grateful for any hints
Tilman