>Thanks Jason, as far as i know, they are two files. In a past thread I was asking for how can i register them and someone said me that they don't need to register because they are like C functions. I just need to know the name of the files

Check the .DEP file, several DLLs may be needed, and copying them is not enough of an install to get it working properly. Mike Helland wrote a FAQ entry on the runtime files, but the exact mix needed depends on what SPs and optional components you need. Use a real installer; you'll stand a better chance of getting things in place, since it may be necessary to use delayed copy and registration on some files on some systems.