Ok, not the cleanest code by any stretch, but it works.

usage: greplike.pl C:\ .c /*
[download]

will then look through all Source code on C for the beginnings of comments.
One of the little features that I like is that if you have a file name with more than one
"." in it ( ".htm.txt") it will grab only the last part after the extension for examination.
Could be made better so it searchs across multiple lines, recognizes and strips "" from the string
you are searching for unless you escape them, and so on. Fun little program to make.

Update
Corrected my two errors that Ovid pointed out.
Thanks Ovid! :)

use File::Find;
use strict;
use integer;

my $filecounter = 0;
my $dir = @ARGV[0];
@ARGV[1] =~ m/(.*)(\.){1}(\w+)$/g;
my $filename = $1;
my $filesoftype = $3;
my $stringtosearchfor = @ARGV[2];
print "Looking for files of type $filesoftype in $dir containing $stri
+ngtosearchfor\n";
sleep 10;

find(\&lookingfor, $dir);

print "Found $filecounter files of type $filesoftype!\n";

sub lookingfor()
{
    if (($_ =~ m/\.+($filesoftype)+$/io) && (-f $_))
    {
        $filecounter++;
        open INPUT, "<$_" || die "Unable to open $_ for examination: $
+!\n";
        while(my $line = <INPUT>)
        {
            chomp $line;
            if ($line =~ m/$stringtosearchfor/gio)
            {
                print "Found match in $File::Find::name at line $.\.\n
+";
            }
        }
        close INPUT;
    }

}
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