This should be a good base:
3.00 lb Extra Light Dry Extract (3.0 SRM)
1.00 lb Wheat Dry Extract (8.0 SRM)
2.00 lb Wheat, Flaked (1.6 SRM)
1.49 oz Goldings, East Kent [5.00%] (60 min)
0.75 oz Coriander Seed (Boil 10.0 min) Misc
0.75 oz Orange Peel, Bitter (Boil 10.0 min) Misc
1 Pkgs Belgian Witbier (Wyeast #3944 or White Labs WLP400) Definitely want a Belgian Wit yeast though.
Mash your flaked wheat at 155 degrees for 60-75 minutes (the longer will up the efficiency and ABV%)
Strain the wheat grains out and bring wort to boil, add extracts and you know the rest...
taken from BierMuncher's thread located here: http://www.homebrewtalk.com/f71/blue-balls-belgian-wit-blue-moon-clone-24978/
i'm drinking one right now and it's mighty fine