Be persistent! Ask your professors what kind of
research they are doing. If it sounds interesting to you, bug them,
bug them, and bug them some more. Use their office hours to do
this, however, since going to their offices at other times will
be intrusive. Then, once you have an advisor and a project, devote
as much time as you can to it. None of the time you spend on the
project will be wasted, and you will end up with a nice final result.
Also, enjoy yourself. This is for learning and having fun!