What are the differences between PWLPD version 2.7 and 3.0?

Two different methods can be used to set up the printing for a print queue, a) through a profile or b) direct through the command line option.

Through A Profile:

A Print Wizard "profile" is a textual file defining how a print job should behave and what settings to use, including the init file. When you set up a print queue, you can specify a profile name to use for a specific queue. These "profiles" are set up via the User Interface and the Tools menu for "Setup profile" and the Properties:Print Wizard tab. You can then associate a Print Wizard "profile" with your queue (see the Queue Properties).

Direct:

Through the User Interface, go to the Tools : Setup Services : Properties dialog, select your queue and go to its Properties. Under the Queue Properties and the "Action to take" tab, you can actually specify the job to run for this queue (the 'Default program or script...'). Here you can add the init file direct to the executable line for Print Wizard:

C:\printwiz3\printwiz.exe /q /minimize /vdocname=PWS /vinit=abc.init

(check the path of course....).

Those are the two ways. The objective in this version is to provide more flexibility and this does make things a little more complicated, but the general features are still the same.