Two recent articles, a review of behavioral interventions for insomnia and a discussion of who is a good candidate for CBT for insomnia sound useful (I haven't read them). They are:

Irwin, M. R. (2006). Comparative meta-analysis of behavioral interventions for insomnia and their efficacy in middle-aged adults and in older adults 55+ years of age. Health Psychology, 25, 3-14. (Note: I object to referring to indiviuals who are 55+ as "older adults." Never mind why.)

Smith, M. T. & Perlis, M. L. (2006). Who is a candidate for cognitive-behavioral therapy for insomnia? Health Psychology, 25, 15-19.