Hi Rene',

Here is some info for you:

Quantity Charts and Estimating Tips
Board: Quantity Cooking at Recipelink.com
From: Betsy at Recipelink.com 8-8-2005
To: ISO: bbq birthday - amounts for 35 guests
Msg ID: 041021
MSG URL: http://www.recipelink.com/msgid/041021

And here are quantity charts for:

Baked Potato Bar (or Taco Bar) for 100

Ice Cream Socials, Affogato and Sundae Bars for 50 to 200

Fresh Fruit Purchasing Guide For Platters and Salads

Vegetable and appetizer trays for 100

I hope you find these helpful,

Betsy