Since we're from all over and it's a pain to constantly look up how much one cup of X ingredient is in ounces or grams or whatever, I thought I'd point you guys to two sites I find very useful.
The first is a table that lays out what 'one cup' of different ingredients is both British Imperial and Metric weight:
http://www.veg-world.com/articles/cups.htm
The second is a handy conversion calculator from cooks.com which allows you to type in the amount, select the unit from a dropdown list and voila!
http://www.cooks.com/rec/convert/
Happy cooking.