Find the driver’s icon in Control Panel, right-click and select Properties. From there, click the “Printing Preferences...” button, then “Advanced...” and consider the following:

Now we're ready to go. Open a document that you would like to make a PDF file of, and print it using the Adobe PostScript driver to a file called (say) “file.ps”. Load this file into GSview (e.g. by double-clicking on it). Click the File menu and choose “Convert...”. Scroll down the list of devices on the left and select “pdfwrite”. Press OK and save the file as (say) “file.pdf”. Et voilà!

Instead of saving the intermediate file each time you print and littering your harddisc if you neglect to delete them diligently, it is often easier to create the files in the printer spooling directory and let windows delete them automatically. It also means that you can usually create PDF files from software that tries its best to stop you, e.g. Scorch won’t let you print copyrighted sheet music to a file. Note that this section only works sensibly if you're running some variant of Windows NT, i.e. Windows 2000 or Windows XP.
First go to the properties window of the printer driver, and ensure that under the “Advanced” tab the option “Enable advanced printing features” is UNchecked:

Now under the “Ports” tab, select any unsused port on your computer (e.g. COM2 is rarely in use). (Note that under Windows 95 variants, you will need a printer connected to this port, switched on but with no paper loaded. The above option change is unnecessary however.)
The postscript files are now created in C:\WINDOWS\system32\spool\PRINTERS (depending on where Windows is installed). I have set my computer up with a shortcut to this folder in the Quick Launch toolbar on the taskbar, and put a GSview shortcut in the Send To menu (C:\Documents and Settings\Username\SendTo), which I have found to be the most efficient way of producing PDF files.
Email: richard@rejc2.co.uk