Free components for zipping/unzipping files needed!

I have components for zipping/unzipping .zip files. I need components
who can zip/unzip the following zip formats:

Arj
Cab
Rar
Arc

Thanks!

-Petter-

--
Petter Holmstr?m
E-mail: mailto:petter.holmst...@parnet.fi
Home page: http://www.parnet.fi/~pkh/