there are several ways, but I think the easiest is to use a dedicated font for the job., so I designed some...
I'm sure you're aware of the "User Font" facility available in NWC through the Page Setup Dialogue:
|File|Page Setup...|Fonts (tab)|User 1 (to 6)
If you have NWC2 on CD, then you have an install option for my font suites. Otherwise, they are available from the Scripto:http://nwc-scriptorium.org/helpful.html#Fonts
Or from NWC:http://www.noteworthysoftware.com/uc/pardypack/
Installation instruction etc. are on the web page as well as in a PDF within the ZIP files.
For text Chord construction, use the *Chord font. E.G. if you use the SwingDings suite then the chord font is SwingChord, If you prefer a serif font the the suite is called MusikDingsSerif and the Chord font is MusikChordSerif.
They are designed to be as flexible as I could make them, I hope you find them useful.