Registering a bunch of DLLs can be a pain in the ass.  This DOS command will let you register all of the DLLs in a directory.  NOTE:  The /s switch is silent — it doesn’t report success or failure.  It’s great when things work, but a failing registration can set you back a couple of hours if you’re not aware of it.  To register all DLLs and report on the success or failure of fall, remove the “/s” from the command.