eMachine's customer service was very good last I had occasion to use it. The keyboard that came with a system had a QWRRTY keyboard (E was missing) and I had the new one by 2nd day air with no return needed.
I recommend giving them a shot first since this issue may even be known to them.
I found Cnet's closing paragraph on your machine helpful too:
"We also like, as always, the BigFix application, which provides you with direct support help from Gateway, eMachines' parent company (which is, in turn, owned by Acer).
For the rest of this system's support, eMachines offers one year of parts and labor coverage, as well as 24-7 toll-free phone support. Online you get system-specific support resources, as well, along the lines of driver downloads, live chat, and other features. Because each eMachines is a fixed configuration, any support tech you come across should know exactly what kind of hardware you have, at least out of the box."