I do use Linux Operating System in all my computers, my two Desktops and my Laptop, but some of my colleagues do still use Windows (poor them) so to send them zip files, I can not use the tar.gz files, so I usually put the files I need to send them in a /tmp/something directory and the use zip.
First install it.
sudo aptitude install zip
That works for both Debian and Ubuntu
Then use it.
zip -r zipped_file.zip /tmp/something/
And it is done, as easy as that, and now all my colleagues will be able to read the zip file.