If you click on the following link, it will take you to where you can download the manual for any acer computer. Once on the site, selct computer type (notebook), and model (aspire 3000), then press search. When the results come up, click on the first item: Aspire 3000 / 5000 User's Guide, then when it comes up look at page 13. It will show you the view of the underside of the notebook and tells you exactly where the hard drive is.
http://www.acerpanam.com/synapse/for...0%26%20Manuals
Hope this helps.