The NYTIMES has reviewed some research that suggests that n online treatment program for insomnia using cognitive-behavioral therapy can be quite beneficial.
For the article in the NYTimes go to: http://well.blogs.nytimes.com/2009/08/10/an-internet-solution-for-insomnia/
To go to the website with the program on insomnia click: http://www.cbtforinsomnia.com/