You would probably need to connect a usb CD/DVD player and boot from the CD provided with the machine.
On switch on, press F12 and choose the cd/dvd as the boot option. Then follow the prompts, if there any.
I have bought a toshiba nb100r netbook with the ubuntu 8.04 operating system, it works perfectly fine but I cannot connect to the internet, when I go on to the manual configuration under the internet icon and then under th connections tab the option for a wireless connection is not there, there is only wired and point to pont connection, any ideas on how to get this problem fixed please. Many thanks.