The problem is that my program does not work. I took you advice and cleaned it as shown below:

#!/usr/local/bin/perl -w


use strict;
use File::Find;
use File::Copy;

my $sourcedirectory = $ARGV[0];
my $targetdirectory = $ARGV[1];

copyfiles();
sub copyfiles()
  {
     #the $sourcedirectory below tells the find where to start
     #looking for files.  The .TXT tells it only to return the files 
     #with the path if the file is a .TXT file. It then uses the copy 
     #of File::Copy to copy the entire path\filename to a SINGLE 
     #directory target.
    find(sub
           {
            copy(({win_path{$File::Find::name$/"if(/\.TXT$/)}",
                "$sourcedirectory"),"$targetdirectory");
           }
        )           
 }
 # ruzam figured out the following line on
 # how to convert the resulting string to MS-DOS complaint format   
sub win_path
{
(my $path = shift) =~  s![\\/]+!\\!g;  return $path; 
}
[download]

But I get the following error during when I try to run it:

Scalar found where operator expected at notworking.pl line 21, near "$
+File::Find
::name$/"
        (Missing operator before $/?)
String found where operator expected at notworking.pl line 21, near "$
+/"if(/\.TX
T$/)}""
        (Missing operator before "if(/\.TXT$/)}"?)
syntax error at notworking.pl line 21, near "$File::Find::name$/"
syntax error at notworking.pl line 23, near ")
"
Illegal declaration of subroutine main::win_path at notworking.pl line
+ 27.
[download]