I have no idea what "Web Easy Professional" is, but I will try to help you as best I can:
Unless you have renamed your domain's "base" directory, by default dreamhost uses the name of the domain (ex. "yourdomain.tld") and places a directory with that name in your user directory. When you first connect via ftp, you will find yourself in your user directory, and there should be a directory below (or "in") that directory with the same name as your domain. That is what you want to put into your program for " initial remote folder" in most every instance (though some programs may require a full path).
You should leave this information blank when connecting to a DreamHost server. DreamHost does use firewalls, but this is not a concern for ftp connection to your DreamHost server.
You can also find a lot of this same information, and a lot more, in the DreamHost wiki.