The easiest way to deal with this is to draw it out on a sheet of paper.
The problem as stated is that you have the wind vector which is a best guess and two more vectors where in one you know the direction (your desired track) and in the other your speed (TAS) so you are trying to find the two missing numbers Heading and Ground speed.
Start by drawing your track A-B on a piece of paper. The direction represents your track measured with a protractor but you don't know how long it should be. Start with a guess and use the TAS to be proportional to the line length. From the destination B you can draw the wind vector, remembering that you are interested in where the wind comes from not where its going to i.e the reciprocal. Mark C as one hours worth of wind up that vector.
Now with a pair of compasses scaled to represent the true airspeed draw an arc from C back towards A. Where it cuts the track line AB you have a new position A1
The distance A1- B is proportional to Groundspeed and the direction A1 -C is the Heading. Remember to use the same scale for all measurements.
The advantage of drawing it is that it makes it easier to comprehend. Once you understand it you will find it quite easy to calculate the missing numbers on the Wizz Wheel which does nothing more than your compasses did on the paper.
Amended to simplify explanation
Last edited by Whopity; 6th Mar 2013 at 10:05.