It seems to me you are trying to somehow make the two things mutually exclusive when they don't have to be.
According to Encarta
http://encarta.msn.com/dictionary_/freewill.htmlhttp://encarta.msn.com/dictionary_/evolution.htmlfree·will [ fr wìl ]
adjective
Definition:
done voluntarily: done willingly rather than by compulsion
ev·o·lu·tion [ èvvə lsh'n, və lsh'n ] (plural ev·o·lu·tions)
noun
Definition:
1. biology theory of development from earlier forms: the theoretical process by which all species develop from earlier forms of life. According to this theory, natural variation in the genetic material of a population favors reproduction by some individuals more than others, so that over the generations all members of the population come to possess the favorable traits.
2. biology developmental process: the natural or artificially induced process by which new and different organisms develop as a result of changes in genetic material
3. gradual development: the gradual development of something into a more complex or better form
the evolution of democracy in Western Europe
4. pattern caused by movement: a pattern formed by a series of movements
5. physics giving off heat or gas: the emission of heat, gas, or vapor
6. mathematics finding root of number: an algebraic operation in which the root, e.g. the square root or cube root, of a number is found.
See also involution (sense 6)
7. military military exercise: a military exercise or maneuver carried out according to a plan
[Early 17th century. < Latin evolut-, past participle of evolvere (see evolve)]
ev·o·lu·tion·al adjective
ev·o·lu·tion·al·ly adverb
Please also note capital "E" in Evolution is generally regarded as the theory.