Oh ... it is working now..

The steps i followed in my WINDOWS2000...  [ruby 1.8.4 (2005-12-24)
[i386-mswin32]]......FIREFOX browser

 1> I extracted the "rubywebdialogs.tar.gz" to
"C:\ruby\lib\ruby\site_ruby\1.8\ev"
 2> set the RWDBROWSER env variable in windows to
       RWDBROWSER="C:\Program Files\Mozilla Firefox\firefox.exe"

3> Changed line 59 of  C:\ruby\lib\ruby\site_ruby\1.8\ev\rwd.rb to
$SAFE	= 0

4> ran  C:\ruby\lib\ruby\site_ruby\1.8\ev\init.rb from Activestate
Komodo ....

5> Firefox browser fires up and shows Hello World perfectly.

Only couple of notes to Erik .. if you are listening
====================================


Although the browser is up and showing....... in my Debug window..... i
get

************************************************************************************************
Starting of the browser failed, or the browser terminated abnormally.
Command => "C:\Program Files\Mozilla Firefox\firefox.exe"
"http://localhost:7702/"
The browser has terminated.
************************************************************************************************
If you can throw some light .. will be great..

thanks Hayato and Erik.

I will take it further.