To prepare for printing in Colour PostScript, please read the following notes. They are aimed towards people who need a facility for producing generic Color PostScript which can be viewed or printed to any PostScript printer, rather than producing device-specific PostScript for a single printer. But much of the information is useful in either situation.
For your convenience, links are provided here to Adobe Color PostScript Printer Drivers on the official Adobe download site. The driver is installed using its own executable, rather than the Add Printer facility, but otherwise integrates into the system in the usual way.
The following steps have to be performed as an administrator, so for Windows NT/XP/2000 you should switch to an account with administrator privileges first, or use the RunAs facility. (If you always use your machine in administrator mode, then think again).
Download Adobe's self-installing executable PostScript driver, universal installer version 1.0.6 or later, for Windows 95/98/Me/NT/2000/XP. If you want to browse for a particular version or language, look in the Adobe printerdrivers directory. A good place to store the executable temporarily is in your Desktop folder, though anywhere will do. For the Firefox browser, Desktop seems to be the default place.
Right click and Save this Generic Colour PostScript PPD file: Take care if using Internet Explorer as this may add a spurious .txt extension to the saved file name!
Having downloaded these files, double-click the self-installing executable icon to install the Adobe PostScript driver. In the install dialogue, choose Local Printer. Choose an output port of FILE if the output is to be written to disk by default. Choose a printer model of Generic Colour PostScript which is derived from the downloaded PPD file. If you are not offered this as a choice, then you will need use the Browse button to find the downloaded PPD file. For Windows XP your Desktop directory is usually at C:\Documents and Settings\username\Desktop, where username is your account name. When prompted to configure the printer, you can choose a default Paper size of A4. That's it.