A City career can mean a life in the fast lane, a monstrous salary and bonus package with an expense account to match. Or it could mean working in a grey suit in a grey organisation with a gold watch as the only bright spot on the horizon.If you want to succeed and have fun, you need to know where to start, who's who in the profession of your choice and how to network. Good qualifications are a must in certain fields but, in the City, drive, enthusiasm and charisma are what really count. If it's a City career you're after, this guide will keep you two steps ahead of the competition. Don't tell your friends.