I installed Photoshop Elements 6 on my netbook (see my 2008/11/17 blog entry) and it went smoothly. Of course, I don't intend to do any serious photo editing on the netbook since it only has an 8.9" 1024x600 screen, but when I travel it will be nice to occasionally do simple stuff and then resize so I can email a photo. The nice thing about PSE 6 is that it uses Adobe Camera Raw 4.6 which supports the raw format for my Sony A700 (and also my older raw files from the Canon 30D, Sony A100, Canon DRebel/300D, and Minolta D7i cameras) so I can convert raw files even when I am traveling. The EeePC 900HA has an option to change to a 1024x768 display and that turns out to be great because I discovered that ACR won't work with anything less. To use ACR I just made the quick switch to 1024x768 (there is an Asus tool icon in the system tray) and then used ACR. Not as convenient as a bigger computer, but that isn't the point since this isn't something I would need to do much. Just having the capability though is cool! I also installed a few PS plug-ins and they work fine too.
I am looking forward to doing some traveling and using the netbook to get wifi access and also be able to see some of the photos I take on the netbook's larger screen -- compared to the size of the display on the back of the camera.