D3CR0M is a DLL wich can be added to any project in any languaje that supports the usage of extern DLLs, such as Visual Basic, Visual C++, etc. Basically consists on one method that will convert your decimal numbers into roman, or your roman numbers into decimal. You may see an example of usage below in this same page or download a Visual Basic Demo Project with full code and a limited version of the DLL that will show a small reminder each time you convert a number succesfully