For a standard install Knoppix needs a minimun of 2.5 GB for the root partition. For the swap the rule of thumb seems to be twice the size of your RAM, where more then 500 MB is not sensible (the last part I got from someone at a local usergroup, so others may have a different opinion). There are several remastered versions available, one of which might suit you. Have a look here. You can also do a 'poor man install', where you copy the iso-image from the CD to your HD and boot from there. Look at the howto; not something for the faint of heart it appears.

- - Edwin