This does not appear to be a vPro system nor does it appear to have AMT. Either way, I am not familiar with this system. I'd recomend asking Gateway if they have or plan to release a driver.
My general experience is that Vista Drivers for ME work fine in Win7, just set Vista Compatibility mode. Also, unless you have a reason to install the ME drivers, you don't really need them. I deal with many vPro systems that never load this driver, and the ME works just fine. However, a disclaimer...I have never worked with that system (or even any G33 based systems) so your milage may varry.