This paper summarises current research on the management of comorbid alcohol and depressive problems, and its application to outlines previous research by the author using correspondence-based treatment for alcohol misuse and recurrent depression, which demonstrates that written treatments are effective in addressing these problems. It then describes the development of an internet-based treatment for alcohol misuse and co-occurring depression, that is consistent with current evidence on the treatment of comorbidities. A current treatment trial to investigate the acceptability and efficacy of the treatment is described.