Hi,
for a better overview you can use
this list of courses (pdf file).
Although you may not notice it at first sight, this document gives you some information about the courses in the next semester:
The remark
SS04 - nur Prüfung means, that this course will most likely take place in the next semester again. This semester there's only the exam.
For a more detailed programme of the lectures you will have to visit the institutes' websites.
If you have further difficulties finding the right courses for you, you could also post the names of your courses here and we could try to help.
The professor responsible for course guidance service is
Prof. Dr. R. Parchmann. I think it would also be a good idea to contact him.
Best Regards
Daniel