no problem dude. I know how nerve racking a job interview is I had a couple within the last year and got an internship working at siemens in vienna for a year. As for questions they might actually ask you. Their are some you can guess which might come up:
What are your strengths/weaknesses, give us an example of a problem you solved, tell us a bit about your self, what is your main selling point, what relervant work/educational experiance do you have etc?
^^that isn't a comprenhesive list and I am not guaranteeing any will come up but it's good to plan for some of the obvious questions which are likely to come up.
If possible I'd make a note of the questions you think might come up and note down your answers, then get a family member or friend to ask you the questions and do a mock interview - you'll probably be surprised how hard it is to answer even if you know exactly what questions are coming up. (make sure to get feedback from the interviewer).
Finally note down things that you want to say in the interview. You've only got one chance to impress them and say anything make sure you know what points you want to put across before going into the interview. Also preplan your questions for when they ask do you have any questions. Coming up with good questions here makes it look like you are really interested in the job (and you can actually find out stuff that'd be useful like lunch arrangements, is flexitime possible, possibilities for training etc etc).