Computers use M3 x 5mm metric screws for attaching DVD/CD drives within computer cases.The M3 size in 6 mm length can be found at and Ace or other hardware stores that has the Hillman small parts drawers.http://www.hillmangroup.com/locations.htmlGood hobby shops have these smaller metric screws. eBay and Amazon are filled with suppliers.MTS - <a href="http://www.angelfire.com/biz2/mts/Icom">http://www.angelfire.com/biz2/mts/Icom</a> IC-251The IC-251