No, but that is something to consider when revamping the help file.
Some other options:
1)
http://www.ultrachm.com/
2) Convert the CHM file to HTML (see
http://www.google.com/search?q=chm+decompiler) or download the
online help to HTML (see
http://www.google.com/search?q=website+downloader) and then import (linked) into UR for highlighting and annotating