I never tried notepad but I used to print barcodes from MS Word. If a code93 font is installed in Windows then notepad should be able print barcodes.

http://cleansofts.org/code-93-barcode-font-free-download.html This link claims to give you a free download of the font in a zip file but it is actually an installer for a demo program and required a re-boot. I think the fonts I used to have were from a barcode reader manufacturer.

Update: I just printed some code 93 from Notepad.