You can provide AND, OR, and NOT operators for your own class:
http://msdn.microsoft.com/en-us/library/5tk49fh2(v=VS.80).aspx[
^] but you can't define new operators. You can't extend the language, which is what that would require. (Well, you
could with careful use of #DEFINE but the result would not be intuitively obvious and might cause maintenance headaches later)