Dachshunds were originally bred to hunt badgers in their native Germany. They still retain strong hunting instincts and going to ground is one of their traits. They have the short turned out front legs so they can push the earth out of the way behind them when they are burrowing. Being a hound, you will have a lot of trouble stopping them. They can of course be obedience trained, but very few would be able to ignore their natural instincts when push comes to shove.
They do make lovely pets, and of course come in three coat varieties (Smooth-Haired, Wire-Haired and Long-Haired) and in a lovely range of colours. They can be susceptible to back problems, due to the extra length they have between their vertebrae, but with careful management of their exercise and lifestyle this should not be too much of a problem.
Careful choice of a reputable breeder (recommended by one of the many breed clubs) will ensure you get all the information and support you would need. The breed club secretary will be able to give you far more information (go to the Kennel Club website and follow the links to find the breed details).
http://www.thekennelclub.org.uk
You can also find breeders on
http://www.champdogs.co.uk
(click on Guided Search, then Hound Group, then the breed, then breeders). Many will have their own websites and offer lots of helpful advice and information.