I find MLC Cyber Cafe at Sri Petaling (opposite The Store) to be really solid with their built-in gamepath config and personal addons installation facility. Just bring everything along in a pendrive.

For raiders, just go to the counter and request for a earphone+mic and you're well on your way.

As for the Authenticator, if you have an iPhone, you can get it free here:

http://appshopper.com/utilities/battlenet-...e-authenticator