Hi all!
I'm looking for a rather specialized piece of software. It need's to do the following:
* Mirror a FTP server
* Only mirror certain filetypes
* be able to only add or change files, not delete during mirror (yeah yeah I know, strictly not a mirror then)
* do it automatically
* be a windows software
Any ideas on a software that can perform it?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic