cannot install to certain machine (live/alternate/7.04/6.06)

[Solomon Herscovitch]

Hi.  I am member SoloSalsa on the Ubuntu Forums.  I never really
needed help like this, and now that I need it, it is really
frustrating.  I hope someone on the list will help me.

I cannot get Xubuntu (or Ubuntu) on my machine.  I pieced it together,
and it never had an operating system before.  I started with the
Xubuntu Feisty LiveCD.  The live environment works great: it detects
Nvidia graphics, sound, WiFi, etc, and runs really well.
BUT, when I run the installer application, the installer just
*vanishes* at a certain point.
I then tried Feisty Ubuntu (not Xubuntu), and reached the same problem.
I tried Dapper Xubuntu, and it also quit, but the 6.06 installer
leaves a little note, just saying to ask online...
I tried Feisty Xubuntu Alternate, and, there, too, it will not install.

These are the last few lines of the Alternate Install's syslog:
base-installer: error: exiting on error base-installer/kernel/failed-install
main-menu[3057]: WARNING **: Configuring 'base-installer' failed with
error code 1
main-menu[3057]: WARNING **: Menu item 'base-installer' failed.
main-menu[3057]: INFO: Modifying debconf priority limit from 'high' to 'medium'
debconf: Setting debconf/priority to medium
main-menu[3057]: DEBUG: resolver (libnewt0.52): package doesn't exist (ignored)
main-menu[3057]: DEBUG: resolver (ext2-modules): package doesn't exist (ignored)
main-menu[3057]: DEBUG: resolver (firmware-modules): package doesn't
exist (ignored)
main-menu[3057]: INFO: Falling back to the package description for
console-setup-udeb
main-menu[3057]: INFO: Falling back to the package description for
console-setup-udeb
main-menu[3057]: INFO: Menu item 'di-utils-shell' selected

I have never ran an operating system on the computer, so I do not even
have Windows to fall back to (not like I want to).  I do have other
computers in the house, though.  Please, will anyone help?