Make sure you look lazy and arrogant – when people try and explain what they want make them feel like morons. Drink ridiculous amounts of hot beverages and/or coke, and make sure you make it to work late and scruffy at least 3 times a week and definitely on Mondays.
Work half a day on Friday, and always ware jeans for the half you are there. Always answer personal mobile(cell) phone calls when in the middle of a conversation with someone. Oh, and never lift the seat. This will make you fit in with the stereotype perfectly :D
I think you will find its actually a lot less daunting than you think its going to be – the only thing I would really be worried about is the state of the code you are inheriting… lol
Basically you will be fine! There are so many jobs-worth out there you will be like a shining beacon of professionalism.
I’ve been going over their code in firebug. After playing around I’ve found some div’s that have no purpose. If you remove them, nothing happens. Even the id or class they call isn’t listed in the css.