I needed something that would let me run a command on a series of IPs, one after the other. I wrote IPIterator to play with FreeBASIC and multithreaded programming. It but not 100% reliable and a bit like swatting a fly with a hammer sometimes but I found it useful so I thought I woul share it. Its meant to be a quick hack to get the job done. I've posted it here:

http://www.irongeek.com/i.php?page=security/ipiterator

with Linux and Windows binaries. I've included some sample commands, can anybody think of some more cool commands before this goes public?