I just did a net-install of the newest sarge release (the testing version of debian).
Some problems I ran into:
At the boot: prompt, enter "linux26" to make sure you get modern hardware support and such. This made the main difference between failure and success for me.
Also, the installation was unable to download the packages. So I ended up with just the basic core and a network. Luckily, its debian
. If this happens to you, once you are done, do the following:
apt-get update
apt-get dist-upgrade
apt-get upgrade
apt-get install x-window-system
apt-get install kde
apt-get install gdm
Then startx, and you should be good to go
I hope this prepares you for any troubles you run into.