in reply to dennis' comment on my last post on this little thing (http://drowningintechnicaldebt.com/blogs/royashbrook/archive/2009/01/21/create-a-custom-sendto-item-to-process-files.aspx), here's the way to do this with powershell
make sure you have powershell installed and working
create script somewhere with text: foreach ($i in $args) {move-item $i $i.Replace(".mod", ".mpeg")}
create a shortcut in the sendto folder that has the command of '[pathtopowershell.exe] -noexit [pathtoscript]
enjoy!
i was only renaming certain files to certain other files (MOD to MPEG), but obviously you can customize this however you see fit. i had my batch before set not to exit so i could see what was up, but you could take...