Assembly-to-C++

I have a .DLL file that cannot be registered using RegSvr32.exe. Apparently, this particular .DLL does not have a DllRegisterServer method within it, so yeah, self-explanatory. Anyway, this .DLL is vital to a software that I attempting to operate, but I have no idea of it's content or specific purpose to the software as a whole. Basically, I need the .DLL disassembled and translated into a C++ Compilable .DLL file. The .DLL is a little over 90KB big, so it is not a small file, and there will be alot of assembly code to go through. Besides that being a time consuming factor, this should not be a very hard job for a skilled Assembly/C++ programmer. Thank you.