Whoever posted this ad doesn't need a computer. He needs an English teacher:
"The Dell Inspiron E1505 notebook is a great condition. It already pre-installed Window 7 Home Premium Operating System. 1.73 Ghz Processor Speed, and Intel Core 2 of the Processor type. If you will be interested in adding upgrades memory, hard drive disk, etc then, you will be responsibilities paying on your own. I am highly recommend you need to be consider do choose a free Microsoft Essential Security download through website for free Anti-Virus Program."