One time user access

[Scott Henson <shenson2@wvu.edu>]

I was wondering if there was anyway to create a user that could only
login once and then was invalid.  See the thing is that I have to use
telnet to login from a windows machine to do some work with the gcc.  I
dont want to have to expose my machine to unnecessary security risks, so
I was wondering if I could create something like one time login name and
password pair, so that even if someone did obtain the user name/password
pair from sniffing off the net, they wouldnt be able to use if cause it
would be deleted off the system.  I dont know how clear I have been or
if it is even possible, but any suggestions would be appreciated. 
Thankyou
Scott Henson