automated uploader

[spitfire451]

I'm trying to represent the following command line series in a batch file:
fyi ###...=ip address

C:\> ftp
ftp> open ###.###.###.###
User (###.###.###.###:(none)): username
Password: pwd
ftp> cd directory
put /local/file.txt
disconnect ###.###.###.###


In the command prompt this works perfectly but I don't know how to 'convert' it to run automatically in a .bat (containing ip address, username, and pwd of course)

Any help?