well, if you want a job at curry's, be sure to purge your mind of any, and i mean ANY, knowledge you have about electronic equipment. you shouldn't even be able to find the standby button on the front of a tv. also, be prepared to tell everyone about the great insurance policy you can do for them, even if it's just for the cup of tea you've just made for your mum. and don't forget to completely ignore customers, especially if they're looking for help, if they come near you be sure you can find a nearby workmate to have an apparently deeply important conversation with.
well, rant over, apart from that, good luck with the interview!