Rockstar talks GTA IV PC DRM

Rockstar's outlined the DRM methods used for the PC version of GTA IV in this IGN article, confirming that you'll need to register the game every time you install it on a new machine.

The title will use SecuROM, but you'll be able to install it as many times as you like.

There's a lot of info through there, so if getting het up about anti-piracy measure is your thing, it's Christmas come early.