If you made one next weekend you could be drinking it on June 16 at the earliest. That's two weeks fermentation and two in the bottle.
Go to NB and check out the cream ale. Click the additional information tab and there is a button for the recipe. It tells you what's in the box. Go from there. I just looked at it, seems like a good recipe. Also, the recipe section of this site is awesome.
Most cream ales are the same recipe wise, a few tweeks here and there, but mostly similar. Do a little research on what a cream ale is, style guidelines, history ect ect...then build a recipe from there. BJCP.Org is where you can find the guidelines for it, and every other beer.