Get a hold of the Barkbusters book, they have some good suggestions in there. They've got this thing where you use dog body-language to communicate your disproval, once you have established yourself as the pack leader it's easier to train other behaviours

Hound dogs are usually pretty bright, very socialable, and I suspect he's bored. Lucky for you daschunds do love their food, so treats that will keep him busy like a kong, or a marrow bone will also help. You need to play with him and take him for walks.