Ok, so I opened the settings file and removed the "//" at the beginning of the line so that it is not commented out, and I changed the name "ANDYCOMPAQ" to my computer's name. Then I quit and restarted ST, but it still gave the same error message as before when it tried to load the plugin.
Then I also tried editing the two lines in quickprint.py to what you wrote. Now something different happens! ST starts without an error and appears to load the plugin successfully, but now when I try to use the QuickPrint feature, I get the following error:
I should note that probably unlike most ST users, I'm a biologist, not a computer programmer (I use ST for basic DNA sequence analysis/cleanup), so I appreciate your easy-to-follow instructions.