And from Pfizers MSDS:
http://www.pfizerfrank.com/PDF/PfizerFrank/revolution_en_co_ois.pdf
Dogs:
Revolution kills adult fleas and prevents flea eggs from hatching for one month and is indicated for the prevention and control of flea infestations (Ctenocephalides felis), prevention of heartworm disease caused by Dirofilaria immitis, and the treatment and control of ear mite (Otodectes cynotis) infestations. Revolution also is indicated for the treatment and control of sarcoptic mange (Sarcoptes scabiei) and for the control of tick infestations due to Dermacentor variabilis.
Dermacentor variabilis is the American Dog Tick. So this does not protect against Lyme carrying deer ticks.