Here are some more links:
mscrmshop.blogspot.com.au/.../how-to-use-crmsvcutil-code-generation.html
www.mscrmshop.blogspot.com.au/.../how-to-use-crmsvcutil-improved-version.html
community.dynamics.com/.../extending-crmsvcutil-filtering-the-generated-classes.aspx
mscrmshop.blogspot.com/.../extending-crmsvcutil-filtering.html