Okay... maybe this way then?

Create an INI file and use EnumINI() - http://www.kixtart.org/forums/ubbthreads.php?ubb=showflat&Number=135385

untested:
 Code:
$excludedcomputers=EnumINI("File.ini")
if ascan($excludedcomputers,@wksta)=-1
  ;not in the excluded list, so do stuff
else
  ;found the excluded computer, so skip this section
endif