VFP6 + InstallShield 5.53 + Help Conversion to Vista

[Adri1201]

Windows Vista does not support the HLP format, so I had to convert to CHM.
I can´t find the solution to the proper installation of HTML Help using Installshield 5.53 and VFP 6.
No help appears when I press the F1 key or when I select Microsoft Visual FoxPro Help Topics from the Help menu. This occurs with distributed applications installed on a system that does not have Visual FoxPro installed.
I´ve already copied the Foxhhelp.exe file and the Foxhhelpps.dll file to Installshield,
but isn´t working.
I know I can register by running the Foxhhelp.exe file with the /REGSERVER option (FOXHHELP /REGSERVER), but I need to do it not manually. How can I register the Foxhhelp.exe using Installshield?

I´ve included the code below at setup.rul:

Enable ( SELFREGISTERBATCH );

if Do ( SELFREGISTRATIONPROCESS ) < 0 then
szMsg = "File(s) failed to self-register: \n" + ERRORFILENAME;
MessageBox (szMsg, WARNING);
endif;

In File Groups I created a folder named Register with Self-Registered option = Yes.
foxhhelpps.dll and foxhhelp.exe are placed in Static File Links.
What is wrong or missing?