perl -pe "s/\n/\r\n/" inputfile might be easier to type. ;) The -p wraps your code in a block like this:

while(<>){
   your_code
} continue {
   print;
}
[download]

-n does that without the continue and print. Remember that Perl was invented by the constructively lazy. The got tired of typing while(<>){print} around their code all the time!

--
$you = new YOU;
honk() if $you->love(perl)