I have a 4 year old female boxer,which i would like to breed. She is an import from Germany and has a excellant temperment. I dont know where to start, but would also like to show in the future. Can anyone help?

Have you joined one of the Boxer breed clubs? They would be able to give you a lot of very helpful advice.
:)

Hi
You need to get as much advice as possible before you start. Ask the breeder who you got your bitch from if possible, also speak to your vet as there are health checks that need to be made before you start thinking about breeding. The more experienced people you can talk to the better.
Good luck!

At the very least you need to have the bitch hip scored and her heart scored by a cardiologist. What were her parents heart scores?

If the parents were not heart tested then I would suggest your bitch's breeder won't be much help, as responsible knowledgeable breeders would do so.

Good luck with the research. Take a year or so to research her ancestors, go to shows to see the males that may be suitable, and decide which type you like, and if they are the type finding approval from a cross section of judges. Also show the bitch to gain an idea of her qu7ality agains her peeers (and the breed standard of course).