The really simple way would just write a cmd file, hpt.cmd, consisting of something like,
hpt.exe -C C:\config\config
or, too not pollute your \usr\bin install, something like, (doing a lot of guessing)
SET PATH=c:\programs\hpt;%PATH%
SET BEGINLIBPATH=c:\programs\hpt\lib;%BEGINLIBPATH%
hpt.exe -C C:config\config
Then just have hpt.cmd on your PATH