pagsGood suggestion, though since Ark did not do too well I was a bit reluctant, when I got back on this test-system I have install the file-roller and checked out a couple of other things as well.
Edit:
Initially I missed your question mark about the exe file, there is a very simple answer, some zip files are marked exe, they are so called self extracting so by applying file-roller it just sees a zip file, small fry for the roller.

Funny file-roller does sort of open the file but only 4 minor files of no recognition at all. I am starting to wonder if the download via the net is sufficient.