Steam Integration is now here, thanks to the suggestion from player KforKill!
In order to combine your existing Drew's Community account you'll need to visit this page - http://drewscommunity.com/account/external-accounts
You will need to sign into your Steam account. Once that has gone through, you'll be asked to provide the password for your current DC account. If you have forgotten your password, sign out and use the Forgot password? feature on the forum login bar.
New registrations can be performed either through steam or directly on the site as before.