Requesting for cash gifts versus the normal gift registry can be a little daunting, but it can be done with class! First, you want to make sure you set up an account with an online cash registry service. Some of our favorites are Tendr [they add a nice touch by allowing your guests to select a pretty card with a nice message along with the amount they would like to give] and My Registry, which actually allows you to virtually combine all of your traditional store registries in one place, adding the choice to gift cash. This is great because it still leaves the option available for those guests who want to purchase something a little more personal. Once you create your account, add the url to your wedding website and VOILA! You have successfully made your request known without appearing tacky!
A 'Quick Tip Don't': Do not request a minimum amount. Allow your guest to give what they feel compelled to. You don't want to come off pushy... or like a beggar.