Assuming that you have a PostScript printer, you can dump the file(s) to the printer since they contain the raw print stream. Set up a DOS mapping for LPT1: to the printer:
1) make sure the printer has sharing enabled (on the Sharing tab of the printer's properties page)
2) map LPT1: to the printer (using a command something like "net use lpt1: \\ComputerName\PrinterName")
3) copy the .ps files to the new device: "copy *.ps lpt1:"
The above might only work on NT-based Windows versions (NT, 200, XP, Vista) - I'm not sure about Win 9x.
If you don't have a postscript printer, you'll need a program that knows how to interpret .ps files. I don't have experience with any, but I understand that Adobe Acrobat (not Reader, but the full Acrobat) or GhostScript can do it.
For files that need a program to print them since they are not in a printer-native format (like *.doc or *.pdf), you can usually drag-n-drop them onto a printer icon - that'll cause the system to invoke the program associated with the file (ie., Word or Acrobat) to print the files.