System not finding fsck or /sbin

["J.L.Gomez Dans" <J.L.Gomez-Dans@sheffield.ac.uk>]

Hi!
    I left my computer over the weekend enjoying itself with octave. 
I tried loggin in from my ppp account last night, but couldn't; my 
host was asking for login and passwd, and would then close the 
connection. When I came here, all sorts of kernel messages were 
around, basically saying that the root fs was corrupt and mounted 
read-only. I couldn't do anything, so I resetted the computer, and 
restarted it again. It now boots on single user mode. I tried having 
a look at what fsck would say, and found out that /sbin isn't 
available. I get some sort of message saying that that directory's 
got some errors.

   Unfortunately, I can't find the bootdisk I had for my computer... 
gloom... Any ideas? Please, I'd appreciate that you cc'd any replies 
to me as well as to the list.

Thanks
Jose