Is there anyway to design an orchestration from my own .net application?

Hi All,

my question is that is there anyway to design a workflow or called orchestration from my own application? I want my users to use a customised and simple interface to define the workflow. Currently user need to give me the workflow in visio, then i manually convert into orchestration by using visual studio.

If I can develop a more simple and meaningful orchestration designer for my users, then those people can design and implement new workflow by themself. I don’t know whether it is possible in biztalk.

Thank you for advices