Help with a group interview?

I have a second interview for a great new job. Since I will be working with a team, my interview will be with the 4 others I could be working with. I can’t help but feel this will be more of a popularity contest than a search to find the best candidate.

I know personality and the ability to mesh with the group is an important part of the job. The problem is, I am not a shmoozer. I’ve never had a that “group mentality”, I’m not good at small talk, and many times people are put off by me when they first meet me. I get a lot of “I thought you didn’t like me when we first met.” I’m a bit shy, and this often comes off as arrogant. But I do work well in a group. I’m very outgoing, and fun when I get to know people. I’m also extremely organized, which is always an asset.

I don’t know how to approach this. Any ideas, suggestions, help? I’m very nervous. And, as some of you might know, I desperately want and need a new job.