Re: Acer Aspire 5742G
The NVIDIA GPU itself is supported, but only if the BIOS has an option to explicitly disable the Intel GPU. Some Optimus-enabled laptops have that option but many do not.
My laptop has a GPU from the same series (485M) and it works fine because the machine is not Optimus-enabled. NVIDIA hasn't given a timeline (or even confirmation of a plan) for Optimus support, so if you need support in the short term then I'd return the laptop and switch to a model without Optimus.