how about using something like this:
if @wksta = "WAREHOUSE"
if @userid = "username1" or @userid = "username2" or @userid = "username3"
use x: /d;
use x: "\\server\share1";
endif
endif

This is How I do specific loops for our Citrix Servers, and other machines. Do one check for what computer you are on, and another for the users you want. an or statement can have many options, you can keep saying or, or, or.

Hope this makes sense.

-Ron