Rarissimo

Rarissimo is a file utility that enables to automatically compress and/or uncompress files. Rarissimo is a companion tool for the award winning compression utility WinRAR.
Distinguishable from other compression solutions by its ability to fully preserve NTFS alternate streams. This feature allows to automatically compress/uncompress Macintosh files stored on NT volumes preserving their filenames and peculiar structures - it means for example that you can use Rarissimo to send and receive Macintosh files using any standard FTP process (and not only Mac-based programs).
Can be installed as a Windows NT or Windows 2000 Service.