Thanks Zander, I actually grabbed the source earlier and had looked through it. Only issue is I lack even the most basic form of proficiency with C, or coding for a GTK application. While I am good at PHP and the language constructs are similiar, this isn't enough for me
Anyone who would like to take this and run with it, please do so. There is a legitimate demand for such a solution, just look at the number of reads on this topic.
As I have free time, I will continue to muddle with the C code, but an application of this complexity (or at least, perceived complexity) is most likely going to be out of my grasp due to inexperience with C.
If someone can jump in and deliver a solution, in both Celsius and Fahrenheit, I will gladly sing your praises.