LPTswap.Com 1.3 swaps the two printer ports LPT1: and LPT2:
To put the printers back to normal, run LPTswap again.
Not a TSR, so takes up no RAM.  MASM source code included.
Copyrighted but may be distributed freely for non-military
use.  By Roedy Green of Canadian Mind Products.  Version
1.3 displays the new address and phone number.