Here’s a template for ZS 3.7.1:
Installing VMware Tools on what’s normally a read-only file system isn’t a trivial thing. Mind you, a lot has changed since the 1.6 beta days and maybe an installed version has a read/write file system.
I’d like to see open-vmtools available as a downloadable module myself. Since 3.6.0 it appears a development kit is available as a module, so maybe someone can put in open-vmtools and no one would have to use a version with proprietary code anymore.