i followed the instructions and after i do the last step i get a message: E: Couldn't find package linux-image-2.6.35-6-generic am i missing something here? thanks for any help you guys can offer. My machine is Laptop Toshiba a45-s121 Pentium 4,processor 3.06ghz and 1.5 gb memory is old but work Graphics/Video • 15.0” TFT active-matrix display****; internal display supports up to 16M colors at 1024 x 768 • Intel® 852GME Integrated graphics controller; 32MB internal • Direct 3D support and DirectVideo • External Color Support/Refresh rate: (Non-Interlaced @16M) • 640 x 480: 60/75/85/100Hz 800 x 600; 60/75/85/100Hz 1024 x 768; 60/75/85/100Hz 1280 x 1024; 60/75/85/100Hz 1600 x 1200; 60/75/85Hz 1920 x 1440; 60/Hz And aso I tried with another key and dont work sudo apt-get install linux-image-2.6.35-12-generic linux-headers-2.6.35-12-generic Reading package lists... Done Building dependency tree Reading state information... Done E: Couldn't find package linux-image-2.6.35-12-generic What can I do to fix it? Somebody can help me!!!