I'm not prepared to sell you on the wonders of Perl (not an acronym btw); but I am really excruciatingly curious about DOS. I'm not finding anything really obvious in google... nothing that stands out anyway. If you could link to it, that'd be wonderful. I hope you don't mean ... er... MSDOS batch files...

Once you use Perl for a few months, you'll really like it. I promise.

UPDATE: oh, you do mean msdos. Honestly, I hope it's a joke. :) But if you're serious then the benefits of perl over dos are far too numerous to list.