Birthday Parties Ideas

Someone has a list of ideas for birthday party and party supplies for 40th?
Im throwing a 40th surprise birthday party for my boyfriend ... Good ideas for the party itself? Also, does anyone have a list of things that would have to buy for the party? Its going to be a party of 100, with a DJ and cared for, but I have not thrown a party of this size and have no idea what else I need.
* Try to find a theme in hes-casino, fav sport or sports team, 70 and 80 years, school colors, whatever you think you might like better. * Make out the guest list then send invitations about 3-4 weeks before the party, make sure that on all of them the right information, and that is a surprise to not spill the beans! dinner drinks served separate charge? * Get all the decorations in order to balloon arrangements, purchase other decorations to match the theme of * any other accessories for the match results sign frames, table image of your wedding photos throughout the year (to beat his mother for some cute baby pics!) or make a slide show of photos, party favors, centerpieces, tablecloths * any of the games you play? DJ also ask to see what kind of games that do, get all the supplies and prizes * are providing the cake for that should be enough to supply as it is being treated. get a plan to go to that day and how it will come to the party, find partners to help you decorate and pick things up that day, if you can not slip do it yourself then PARTY !!!!!
I want to start a business of performing at parties for kids' birthdays. Any ideas on how to advertise?