There are some people on this website that want to breed, however they're breeding to better the breed. They show their dog to ensure it's the best of the best, do a number of health takes to make sure their dog won't be passing on any undesirable genetic problems, and they look for another dog that will help to better the breed. Purebred just doesn't cut it anymore. This is extremely costly and they're lucky if they even break even with the puppies (often times they don't), but they do it because of their love of the breed. They also have a contract that, among other things, states that any puppy MUST be returned back to them at any point in its life if the owner is not able to care for it any longer.
Unfortunately, with the massive pet overpopulation problem, this is the only way breeding should be done. Countless animals are euthanized on a daily basis because of the lack of homes for them. Far too many people are breeding to make an "easy buck", or for whatever other excuse they think of, and this is where all of these dogs in shelters come from.
Please, if your dog isn't an excellent specimen of a Dachshund, please have it neutered. Unneutered dogs have a higher tendency to roam (especially when there is a female in heat around, they become unbearable) and there is a much higher risk of developing cancer in the reproductory organs. Often times, they also develop undesirable behaviours, such as marking inside of the house.
Breeding can also be very expensive. What if something unexpected happens, such as the bitch needing a cesarian section? What about all of the vet work for the puppies (including spay and neuter if they don't make the show cut)? The owner of the sire could be held responsible for a number of these things.
You sound like you love your dog and want the best for it; kudos on trying to get more information. However, I urge you to please do a little bit of research and neuter your dog...there are too many dogs in shelters already.