Yes best of luck Hom3er.
Remember that if you've got an interview it's normally because they like what they've read or know about you (few people bother interviewing no hopers). If you do come under what may seem aggressive, patronising or even intimidatory questioning at any point, stay calm and professional at all times. If, for example, it's put to you that you have serious shortcomings in certain relevant areas then do your best to set out the qualities, experience and knoweldge you have which compensate. It's common for interviewers to appear very judgemental about certain things - qualifications, say - but what they're often doing is trying to see how well you argue your case and cope with the pressure they're deliberately exposing you to. The more you can research and anticipate the company and the requirements of the role, the better equipped you'll be to translate what you feel you have to offer into language they'll understand. Basically, you have to try to sell yourself and not just wilt under the pressure. If doing that seems a tad arrogant, please just accept that unless you're obviously making it all up as you go along, the interviewer will be delighted to learn that you've thought about the position and the relevant skills/knowledge you have. I suppose interviewing is often a bit of a game, even though I accept it doesn't often feel like it at the time.
One final tip. I often hear it said that the first impression is vital and I can't deny that it is important but at least you have time to change that impression if things don't start well. No such opportunity to change the final impression you make, however, so try to finish off the interview on a positive note by, for example, summarising briefly what you feel you have to offer or commenting favourably on what you've gleaned about the company/post during the interview. There really are many ways in which this can be done but the key is to plan your strategy beforehand and adapt it to suit the situation you find on the day.
HTH