Ok folks, here's the posting I promised on planetary temperatures:
   First some definitions,
      let H represent the solar insolation (number of watts
      per square meter) at 1 A.U. (earth's distance) from the
      sun. Its value is 1353 watts/m^2 (m^2 means square meters)
      Let s be a constant (known as the Stefan-Boltzman constant)
      and its value is 5.67 x 10^-8 watts/m^2K^4)
      Let D be the distance that the planet is from the sun (or
      star) in A.U.
      Let T be the temperature we want to calculate in Kelvins 
      (My peeve: NOT degrees Kelvin)

   Now for the formula:
    other locations will be this temperature times the cosine of
    the latitude to the one-fourth power (that is, take the cosine
    of the latitude and then raise that to the one-fourth power by
    taking the square root twice). 

Ok, why don't we play around with this for a bit. Calculate what the 
temperature at the subsolar point would be if the earth were a blackbody, 
had no atmosphere, and rotated synchronously. To convert a Kelvin 
temperature to Celsius, subtract 273. C=K-273. How hot is this (remember 
that water boils at 100 C under atmospheric pressure)? What would the 
temperature be at a latitude of 60 degrees? Using your intuition, what 
should happen to this calculated temperature if we account for the fact that 
the earth has a substantial, rapidly rotating atmosphere?

 Enjoy playing...
 Dirk