Installing SAP Help/Library

Step1: Install SAP library on your local P.C.
Step 2: Configure the sapdoc.ini
Configure file sapdoc.ini with the entry as shown. This file exists on C:\Windows. If it is not found, create it using your favorite text editor.
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[HTMLHELP]
HelpType=HtmlHelpFile
HtmlHelpFilePath-EN=<C:\Program Files\SAP\SAP ERP Central Component 5.0 English\HELPDATA\EN> : Path of SAP help where you installed it on your P.C.
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Step3: logon to sap dev system
            – Execute the tcode SR13
            – Click on the tab HtmlHelp file
            – Click on New entries
            -Enter variant name (ECC5 if u r using SAP ECC5)
            -Platform =Win32 if you are using xp
            -Area =IWBHELP
            -Path = http://help.sap.com Or path of the your server where SAP library is installed.

             Save it. Request Dialog prompts you to create request. Create Request.

            Transport the request to Quality & Production.

Note: Entries in the file sapdoc.ini overwrites the settings present in SR13, if SAP library is not available on your local 
system, it starts from central location.