There is a lot of information on this site about brewing with honey. (Use the search!)
I read thru a lot of it recently as I am brewing a Honey Hefeweizen now. Short version is that honey ferments out very clean, and leaves very little flavor behind-but it does boost your abv and dry out your beer (changes to mouthfeel, and taste). I'm told that a rule of thumb is that 1 lb of honey will raise your alchohol content by 1% in a 5 gallon batch. The more you heat it, the more the aromatics fade as well. There is also the concern of the yeast eating all the simple honey sugars, and losing the ability to eat the complex sugars from the grains if you add it upfront.
Some people add it at flame out to try and sanitize it, others add it to cooled wort, some wait until high-krausen.
So read up, experiment, and let us know how it works out.