Here are the steps I took to install and configure Ubuntu 8.04.1 on my brand new Dell mini 9 (Inspiron 910).
1. Attached an external USB Cdrom drive and inserted Ubuntu 8.04.1 (32bit) CD into the drive.
2. Booted the laptop, pressing the "0" key to allow me to boot from the Cdrom.
3. Installed Ubuntu... Only change from standard (next... next... done) install was to setup the partitions manually, creating two (2) partitions as follows;
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200MB - /boot
"/" for the rest. No swap.
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4. Rebooted after install.
5. Connected to wired network and updated packages (173 total).
6. Reboot.
7. Wifi now works.
8. Sound... Added the following line to the end of /etc/modprobe.d/alsa-base;
options snd-hda-intel model=dell
9. Installed Restricted codecs and software;
sudo apt-get install ubuntu-restricted-extras
10. Installed Restricted Broadcom Driver;
System -> Administration -> Hardware Drivers
11. Done.