Ok, so here's the newb again asking questions

I recenlty installed Red Hat 7.3 and usually when I boot up it gives me a graphical interface where I just type in 'root' and my password and red hat comes right up.
Now however ( i didnt even do anything!) the graphical stuff doesn't come up, only a text version and it says:
login:
so I type 'root'
then it says
password:
and i type my password
but then it just says
You last logged in at blah blah blah
You have mail.
[root@localhost]:
or something like that....what do i do in order to load up the OS?