rewrite rule

[hulya gurer]

I am trying to upgraded the apache1.3.27 to apache 2.0.44 and testing 
everything what I have on
1.3.27 config.  I am having problem with  rewrite rule which is below 
works with no problem on apache 1.3.27 but it's not recognized by 
2.0.44.  Is there anything needs to be changed to be read by 2.0.44.

Thanks
Hulya
<IfModule mod_rewrite.c>

RewriteEngine on
#       RewriteLog logs/rewrite
#       RewriteLogLevel 2
        #       This will redirect the URLs that end in an "/"
        RewriteRule             ^(.*/$) /cgi-bin/nav?varinc/docs$1
[L,R]
        #   HTML FILES:  parse out basename, but remember the fact
        RewriteRule             ^(.*)\.htm      $1 
[C,E=WasHTML:yes
]

        #   rewrite to cgi document if exists
        RewriteCond   %{REQUEST_FILENAME} -f
        RewriteRule   ^(.*)$ /usr/varian/cgi-bin/vardocs/$1
[S=1]
        #   else reverse the previous basename cutout
        RewriteCond   %{ENV:WasHTML}                    ^yes$
        #       if yes then go the the new page
        RewriteRule   ^(.*)$    /cgi-bin/nav?varinc/docs$1
[L,R]
</IfModule>