Creamy Basil Salad Dressing

True confession here...I have a bit of a Ranch dressing problem.  Well actually it's not so little...I try to vary my dressings to include balsamic, mustard mixed with a little oil, etc.  But nothing tastes as good as the creaminess you get with the Ranch dressing.  Here is something that could possibly sway my habit and would also ease my feelings of guilt.  I LOVE basil and always use lowfat Hellman's.  I'm making up a batch today.