Hmmm....something's obviously screwed up here (and it's still counting as we speak) Turns out there's a bug in the mail server that's created an extra ".mai" file for every email the server's sent the last 3 years . Downloaded and installed their hotfix to take care of the problem, now I gotta clean up though. Need to delete all .mai files in a directory, > a million at least. So Windows Explorer is out of the question obviously, I tried del c:\directory\*.mai but got impatient after 2 hours sitting there wondering if it was even doing anything What's the easiest way to delete them? I've never dealt with anywhere near this many files before.