Do you have Perl installed? If not you can install Strawberry perl.
Copy the following code to a file called "bump_number.pl".
Then you can convert the string to a increasing number like this:
Open a Command window (Start->Run->"cmd")
type my_page.html | perl bump_number.pl > my_page_2.html
The new file "my_page_2.html" will have your string replaced with a number that increases from 1.
WARNING: This code assumes your target string only appears 1 time per row. In the example below the word "Buick" appeared twice on the same row and both strings were given the same number.
Code:
#!/usr/bin/perl
# Perl script that will:
# - Read each row from standard input
# - Look for a sub-string and replace it with a number
# - Bump the nunber
# - Write each row out to standard output.
#
# Example:
# If your input file is my_page.html you do this:
# type my_page.html | perl bump_number.pl > my_page_2.html
#
my $lTargetString = 'Buick';
my $lNumber = 1;
my $lRow;
while ( $lRow = <STDIN> ) {
chomp ($lRow);
if ( index ( $lRow, $lTargetString ) > -1 ) {
$lRow =~ s/$lTargetString/$lNumber/g;
$lNumber++;
}
print "$lRow\n";
}