The file you downloaded from SourceForge is
You install Slackpackages by issuing, as root, "installpkg <packagename>"
...just to make what the other poster said a little bit more clear.
Slackware does not come with Wine, and it just has emacs-nox. When
issuing "pkgtool" as xushi said, you must run it as root, and then choose
View. It will scan your system and list what's installed.
You should read some Slackware documentation to help you learn:
The Revised Slackware Book Project
Slackware Linux Basics