DOS cannot print to USB or windows only printers. What you need is to download a third party printing program that redirects output from DOS programs to USB/Windows Only printers.
I suggest that you try a program called PRINTFIL which can be obtained at printfil.com. The support for printfil is done through their web site and is pretty from what I have seen. Here is a list of all the third party printing programs that I know of.
PRNT
DOSPRINT
http://www.geocities.com/dosprint
Printfil
http://www.printfil.com
