I have tried that recipe with no success. I don't know if I did it wrong but it just didn't work for me. I was just given this recipe:
Stabilized Whip Cream
1 tsp unflavored gelatin
2 Tbsp warm water(or Other Liquid, Ex. coffee)
1 Cup chilled whipping cream
1/3 Cup Confectioners sugar
Disolve gelatin in warm liquid, add to chilled cream, whip, then add sugar.
whip until peaks form
I haven't tried this myself yet, but a long time decorator gave me this recipe and she says she does all her decorating with it. Hopefull I will have an opportunity to try it soon. Good luck!!