Beginners help with password program!

[tjland at iserv.net]

This is my first version of this program, im kinda new to python and i was
wondering if someone could help me with this. Their are some errors that i
just cant find, and i want some advice on how to do some of these things
easier. Thanx for the help!
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from time import sleep

def Sendfile(password, username):
    outfile = file(username, "w")
    outfile.write(password)
    outfile.close()
    print "Your are now registered"

def Getfile(username):
    infile = file(username, "r")
    content = infile.readline(1)
    global content
    infile.close()


login = input("Are u registered? ")
if login == no:
    new_username = input("What do you want for a username, please letters
only: ")
    new_password = input("What do you wish for a password: ")
    Sendfile(new_password, new_username)
else:
    print "Please Login, Enter username, then wait for prompt!"
    username = input("Username: ")
    sleep(5)
    password = input("Password: ")

    Getfile(username)
    if password != content:
        print """Im sorry but you are not a registered user,
        If you would like to become a user contact the server admin for
        user privelges"""
    else:
        print "Welcome"
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