Well, I'm a programmer, so sometimes I find a way to enter the file which contains all those .DLL files... but in this case I couldn't.
I logged on as the Administrator, but even if I reinstall the ArchiCAD again, it will give me the same error. The problem is that the disc is broken somewhere so at 64% it stops installing... but, rarely, it doesn't say: "the installation have had a problem and had to end". It stops there as if it had already installed. I guess that if I get those files (which are not so many) it has to work. So I've an idea. Someone with ArchiCAD already working give his MSN so I can chat with him and get the files through there.
If it doesn't bother anyone...
Thanks Again