I have some own customized api, which I believe they are not developed in .net. From my previous understanding is that, B4PPC can only execute .dotnet dll.
Is there anyway I can call those api's and make use of them, instead of converting them all into .net library?
You can probably write an intermediate dll in C# or VB that Basic4ppc can call and function in the intermediate library can P/Invoke the functions in your native code library on behalf of your Basic4ppc program.