Jeepster offers these tidbits:

To use the numeric.hlp, simply unzip it into your mIRC
directory.

The numeric.hlp file is now formatted for use with specific 
Windows 3.1 or Windows95 enviroments, be sure to have 
the correct version for your Windows Enviroment.

The zip file for Windows 3.1 is 16numrc2.zip (16 bit)
The zip file for Windows95 is 32numrc2.zip (32 bit)

The other files in the zip allow for browsing URL's mentioned
in the numeric help file by clicking on them.  This will 
start your browser if it isn't already on and go to the URL
specified.

setbrows.exe is only used if you have more than one Web Browser
on your system and wish to specify a particular one or if you
recieve an error message requesting you to specify a browser.
It is unlikely you will need it.

Please read the Disclaimer section, and as long as your at it, 
take a peek at the acknowledgements.  For more information 
concerning the use of this numeric and its browser abilities
read the Installing and Using section of the help file.

Jeepster