It seems that Distrowatch is where the latest list of packages is kept - http://distrowatch.com/table.php?distribution=zenwalk
They are also here: http://zenwalk.mirrors.tds.net/pub/l...kages/zenwalk/
To find the packages for any release, go to the download page and click the folder under the Packages heading. Zenwalk-x.x.iso is what you want - Zenwalk-Core-x.x.iso is a more minimal installation.
Although neither TeX, Tetex or Latex is listed, Zenwalk can use packages from Slackware, so you could grab them from a Slack repository (like linuxpackages.net) and install from there. It's also worth using the netpkg command as it may be on an official repository for Zenwalk somewhere.