Find (and run) the ftp program on your machine
you will now see a "ftp>" prompt
"open ftp.dialup.mit.edu"  (not quotes)
Enter your athena name and password
Then you can use the following commands

"mkdir 6.001" 		make a directory for your 6.001 work (once only)
"cd 6.001" 		moves you into the 6.001 directory
"lcd work" 		(lab only) moves you to where your files are on sicp machines
"put FILENAME.scm"	moves the file TO athena
"get FILANAME.scm"	retrieves the file FROM athena
"quit"			leave ftp
"help"			list available commands
"help COMMAND"		gives short description of command

If you wish to use floppies you can ask an LA for one