First ijm51000 - Thanks! I'm the guy you targeted. New to Areuino and tools pertinent to it. I just made up my mind to try NPP as a substitute editor to the Arduino IDE two days ago.
I had a problem similar to the two postings above related to steps 15 & 16, and I'll think the fix will work for them also. You have to use quotes.
I re-wrote your step 16 in my records as:
16 add the following to the end of the line $(FULL_CURRENT_PATH), so it should look something like this (Don't forget the QUOTES"!) "C:\arduino-1.0.4\arduino.exe" "$(FULL_CURRENT_PATH)"
Another hiccup I had was to enter .ino in step 3. But I should not have entered the leading ".", just ino. Your instructions were correct, my error!
NPP is working great now. Thanks for the posting!