That's just the wrong attitude, m0p.
But seriously, use the fucking edit button.
Anyhow, to clear things up:
ZHLT / MHLT :
Compiling programs. They replace the original qcsg, qbsp, qvis and qrad that are designed for Quake.
Nems batch compiler :
A program which runs the Compiling programs (ZHLT or Q*tools) in order on the .map file. It has nothing to do with the compile itself, but is merely a UI for Batch compiling.
Now, to set up ZHLT tools in hammer, open your Options dialog and change the build programs lines to point to your ZHLT exes. Where you place them doesn't matter.