file selector and shell scripts

[Vulpes Velox]

I am currently working on putting together a shell script to allow me
to save files with certian extensions under firefox and then run a few
commands on them... the problem I am running into is there I can't
seem to find any thing to take care of the file selector part...

Any one seen any thing like this befor... I vaguely remember
seeing something like it awhile back, but can't seem find any thing
like that now.