Included there is the email address. You can write to them in English, but the reply is likely to be in Lithuanian. As you will discover and may already know, the Archives must have the given and surname of the person you are researching, their birthdate (or at least the year of birth), and the name of the village or town where he or she was born or married or died. This is the minimum information they need in order to begin searching for records -- if they exist.