I'm not exactly sure what you want to do. Are you trying to rename all 100 pics to a special naming convenstion into another directory?
Example:
pics are named 0000001.jpg, 00000002.jpg, 00000003.jpg, etc eyc.
And you want to rename them ALL to hawaii01.jpg, hawaii02.jpg, etc etc?

I this is the case, than check out: www.irfanview.com
This AWESOME program is my favorite of all times. It offers alot of batch functionality that does exactly what I specified above. E-mail me if you have any questions on using Irfanview.
[email protected]