What is the highest hard drive I can upgrade
what is the highest hard drive i can upgrade
and processor if I change the hdd do i have to change it to??
2008 netbook; Model ZG5 AOA150-1691; 8.5" screen; 1.6 GHz N270 Intel Atom Processor
Liz, this is what I found out "The HDD is a regular 2.5-in 5400 rpm SATA drive with 80, 120, 160, 250, 500 or 750 GB. A number of different drives have been reported so far: Seagate ST980811AS and ST9120817AS, Western Digital WD1200BEVS, WD1600BEVT, WD7500KPVT, Hitachi HTS543212L9A300, Hitachi HTS543216L9A300, Hitachi HTS543216L9SA00, Toshiba MK1655GSX and Toshiba MK1652GSX." from here. No, you will not have to change your processor. The HDD are supported by your current system. Hope this helps, good luck.
A quick addition to the answer: generally you can not upgrade or change a netbook processor.
They are usually soldered to the main board and changing them would require special tools and skills. If you had both you would probably decide not to try because you would also know chances for failing and rendering the whole device useless are high. In addition to this, you would also need another CPU (processor), which you can not buy from the computer store next door like a new Phenom or Pentium for obvious reasons.