I used to use sdf.lonestar.org, you can telnet right in and set up a next account.
telnet://sdf.lonestar.org/
Its just a basic linux shell. Used to use it when i first discovered linux, and i didnt know how to partition.

http://ffinders.virtualave.net/displ.../view?catid=92

Here is some other shells if you wanna know, havent tried any of the others. Msg me if you try and they are good.