I wrote a command line tool called "Reng" (rename engine) that will allow you to call any other command line tool in a sequence fashion as one of it's options. It can be downloaded from www.mantom.net on the download page.
Matt
Matt Lind
Animator / Technical Director
Softimage certified instructor:
Softimage|3D
Softimage|XSI
Matt(at)Mantom(dot)net