Acrobat 9.0 help

Question

while on the internet with sites that have PDFs to be viewed-Adobe isn't opening the PDFs.
Environment : Acrobat 9.0 pro, Windows XP
Have done the following
1 : Tried to open the same file in some different Browser.
2: Configure the browser to use Acrobat or Adobe Reader as a helper application.
                     To configure Acrobat or Adobe Reader as a helper application:
                     1. Start Acrobat or Adobe Reader.
                     2. Choose Edit > Preferences.
                     3. Select Internet on the left.
                     4. Deselect Display PDF In Browser Using [Acrobat application], and then click OK.
                     5. Quit Acrobat or Adobe Reader.
3) Make sure that AdobePDF.dll is enabled. (Internet Explorer only)
   1. Select Tools > Internet Options > Programs (tab) > Manage Add-ons.
   2. Set Show to "Add-ons that have been used by Internet Explorer."
   3. Find and select Adobe PDF Reader.
   4. Make sure Enabled is selected.
4) Make sure that nppdf32.dll is enabled. (Firefox only)
   1. In the Firefox address bar, type: about:plugins
   2. Scroll down to a section named Adobe Acrobat.
   3. File Name should read "nppdf32.dll" and "Adobe Acrobat Plug-In Version 7.00 for Netscape."
      If this entry is not available, use solution 9 to reinstall the Firefox plug-ins for Acrobat.
5) Download updates for Acrobat 9.1
6)  Repair the HKCR\AcroExch.Document registry key.
  Choose Start > Run, type regedit in the Open text field of the Run dialog box, and then click OK.
  Back up your current Registry file:
         In the Registry Editor dialog box, choose File > Export.
          Type a name for the file and choose the location.
         For Export Range, choose All.
         Click Save.
    Navigate to HKEY_CLASSES_ROOT\AcroExch.Document.
    Right-click AcroExch.Document and select Delete; make sure you have the correct key, and click Yes on any prompts.
    Right-click AcroExch.Document.7 and select Delete; make sure you have the correct key, and click Yes on any prompts.
7) Done Repair Acrobat Installation
PLEASE HELP

Answer 1

Hello Bernd,
unfortunately, repair did not fix the problem.
Incidentally, there are others who have reported identical problems with the Help of other Adobe applications. The common denominator has been the installation of Chrome, which seems to be "hijacking" the Help.
I have Photoshop and Distiller installed, and both have the same problem with the Help. Unless Chrome is installed the help.html will not show up.
... would appreciate any pointers ...
Thanks
Loukas