Unpack OS2WWW.ZIP into your existing server directory (typically "\OS2HTTPD"), but do not allow unzip to overwrite any of your existing HTML files. It is OK to overwrite imagemap.exe because the version supplied with OS2WWW is compatible with Frankie Fan's, but has more functionality.
Running OS2WWW is then as simple as executing OS2WWW.EXE instead of OS2HTTPD.EXE. You may need to specify the "-d" command line switch to specify your server root directory.
For example: OS2WWW -d /os2httpd
If you need to run the "Install" menu option within the PM "SETUP" program, you will be given the choice of preserving your existing configuration settings, or creating a new set of configuration files, while retaining a backup of your previous settings.
Create a directory on your hard drive under which you will be storing your new server. I suggest you use "\OS2WWW", but any directory is OK, so long as you have at least 2 megabytes of free space.
Unzip OS2WWW.ZIP into this directory, making sure to ask your unzip program to re-create the sub-directories too.
For example: UNZIP -x os2www12.zip
Then change your current directory to that directory and execute "SETUP". You will be given a menu of three items: "Install", "Register" and "License". Choose "Install" and enter the details regarding your system, so that it can auto-configure your server for you.
A batch file "wwwstart.cmd" will be created within the BIN subdirectory which lets you start your server with all the required parameters. You must always run this batch file from within the BIN subdirectory, otherwise key data files and DLLs will not be found at runtime. You may wish to include a call to this batch file within your "STARTUP.CMD" on your boot partition to automatically start OS2WWW on boot-up.
For example: UNZIP -x os2www12.zip