How hard is it to use the kit?

If you are a regular Linux user, the kit is very easy to use. Infact, the kit operates just like a regular Linux system. You can login, change directories, run shell scripts, and use all the regular unix commands.

If you are unfamiliar with Linux or Unix in general, the learning curve is going to be steep. However, everybody has to start somewhere and setting up a Linux system on a Playstation 2 is quite easy compared to setting a similar system up on a PC. There are many books on learning Unix and many websites describing how to configure Linux software.