Re: 2nd Hard Drive
During the installation process you will be given the option on where to install Ubuntu. You can select your 80GB HDD and it will install on that. Now the boot loader, GRUB, will need to be installed on the boot HDD that I presume is the Windows HDD. It will replace the Windows boot loader with itself (GRUB) and on boot will allow you to select either Window or Ubuntu (default choice). The other option is you can unplug your Windows HDD and then install Ubuntu with the GRUB loader on the 80GB HDD. Once you've installed Ubuntu on the 80GB you can plug back in the Windows HDD and select what HDD to boot from the BIOS. Usually newer BIOS (past 4yrs maybe) will allow you to select the boot devic on boot by pressing one of the F1-F12 keys. If your BIOS doesn't have this then you will have to go into the BIOS options and manually switch which HDD should boot first in order to select what OS to launch.
♫♪♫ You just keep on trying till you run out of cake ♪♫♪