I have been running Ubuntu 7.10 (Gutsy Gibbon) for just over 2 months on my Dell D600. The laptop has 1.5 GB of RAM, 1.6 GHz processor and uses a wireless network card. This is one of the few Linux distros where I had no problem connecting to my wireless network (at least a problem on my Dell). I simply downloaded the ISO from the Ubuntu site and burned it onto CD. The only issue I had was setting up printing. My printer is attached to a Windows XP machine so I needed to setup printing to a share.
I just connected to the local CUPS server (http://localhost:631) that installed with Ubunutu and added the printer from their. To add a shared printer first you need to share the printer on the Windows machine. In my case I named the share HPC4100 for my HP printer. I then used the CUPS Interface to set up the printer:

Make sure you enter the correct URI. For a windows share using Samba it looks like this:
smb://servername /sharename
In my case it was http://myserver/HPC4100
If the server name does not work you can also try entering the ip address for example: smb://192.168.1.100/HPC4100. However this will cause problems if your printer server’s IP is dynamically assigned. I also recommend printing a test page from cups to make sure it works. If you are prompted for authentication during the setup just enter your username and password or root and the root password.
Troy