IM having trouble connecting my wifes new acer to

A couple of things to check. make sure you are using a good cable. Either try the cable on another PC or use a cable that is working on another pc. When you plug in the cable do the lights at the ethernet jack light up and also does the coorsponding light on the router light up when you it into the pc. IF do not have any lights, you can check to make sure the PC sees the ethernet adapter, you might also check in the BIOS to make sure the ethernet adapter is not disabled. If none of this helps, and since the PC is new, I would contact Acer Warranty support for assistance.