i was wondering if anyone has ever made icing using spenla or some other type of sugar substitute? i am needing it fast cause i have to have this cake done by in the morning. please help.

Here is a recipe that I found on this site. I haven't used it yet but it had a 5 star rating...
http://www.cakecentral.com/cake_recipe-1980-Diabetic-Icing.html

There is a diabetic recipe in the recipe section. I haven't tried it yet. A lot of them use cool whip. Good luck