Windows: Find an install disk of the same type which your licence covers (see sticker on the machine)
Drivers come from EMachines website:
http://www.emachines.co.uk/em/customercare.do?ctx1w.att21k=2&LanguageISOCtxParam=en&sp=page11l&CountryISOCtxParam=UK&ctx1l.c2att1=17&rcond3l.attN2B2F2EEF=3624&rcond4l.attN2B2F2EEF=3912&CRC=99015199
You could buy a driver CD/Download
http://recovery-cd.com/related/emachines/150dvdemachines/emachines-150dvd-drivers.html
Thribble, August 2010