CE? I know since it is IDE, you can replace the IDE Drive in it and put in a CF with a CF-to-IDE Converter in it and watch it boot a lot faster and run for hours on battery!

I have a 2300c and I love it. That front LCD panel is custom to that machine, unfortunately, but you could get parts from ebay. I've seen Duo parts on ebay. Here's an old webpage to hack Duo's in general and how to fix a few problems with it.

http://home.comcast.net/~gionpeters/hhhh/duo.htm

These are Japanese, but you can run it through Google Translate Webpage.

http://www.linkclub.or.jp/~maakun/duoroom/Duoroom.html

http://www.linkclub.or.jp/~maakun/makeduo/makeduo.html