buy a better processor. It's not just the Aeria games servers. My laptop runs a 2.4 Ghz processor, and that still isn't strong enough to handle the large amounts of data transferance going on in this MMO and lag tons in AH a lot of times.
I would recommend using at least a 2.6 GHz processor (desktop computer, not laptop, for flexability in upgrading).
if you running a computer with only factory installed graphics card...it's not very good for gaming. NVidiA is a company that makes really good graphics cards, and would be wise to invest in one also.