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The Dell Inspiron 510m is an older laptop released in 2004. It was generally well received. Due to it's age, it is unlikely to be available for purchase brand new, so one may find it on auction sites such as eBay.
AECOM has purchased Earthtech for $510M. http://investors.aecom.com/phoenix.zhtml?c=131318&p=irol-newsArticle&ID=1107196&highlight=