Use COM in C++ Builder

I'm new to COM libraries and I'm stuck on using a COM DLL in my C++ Builder (XE2) application. DLL is registered. Which are the steps that allows me to create objects belonging to such DLL and invoke their methods? I mean statically.

I couldn't find a tutorial, while I saw different ways:

Component > Import component > it produces a new wrapper unit... and then what?
import the DLL with an absolut path (why? it is registered in the system)
```
#import "C:\Path\to\the\LIB1.dll" rename_namespace ("LIB1")
```
... and then what?
use CoCreateInstance... how exactly? without import/include?

In Visual C# I deal with it simply adding a reference and a using!

I'm very confused! Any help is appreciated.

Solution

I found a way (but tell me if there are better ones):

Component > Import component... > Import a Type Library > select the library
Unit Dir Name = and uncheck "Generate Component Wrappers"
"Add unit to MyProject.cbproj project" > Finish
in the client class > File > Use Unit... > select the unit that was created

in the client class write this code for using the COM DLL:

CoInitialize(NULL); //Init COM library DLLs  

ICompany *company;        

HRESULT hr = CoCreateInstance ( CLSID_Company,  
                                NULL,  
                                CLSCTX_INPROC_SERVER,  
                                IID_ICompany,  
                                (void**) &company );  
if (SUCCEEDED (hr)) {  
     //TODO here you can use your company object!
     //and finally release such resource
     company->Release();  
}  

CoUninitialize();

Where Company was the original class, exposed by the DLL, which I wanted to intantiate.

Introduction to COM - What It Is and How to Use It. helped me a lot.

Note that this requires the creation of *_TLB.* and *_OCX.* units. Is there a way that avoids it?