|If Katherine is asking about the "security" of Wiaacmgr.exe (subject line), most likely it is safe. It is not absolutely necessary (it's a wizard, after all).|
The genuine Microsoft Wiaacmgre.exe should be located in Windows/Sytem32, and the file size on Windows XP is likely to be 433,664 bytes.
Sorry, I can sort of read Spanish, but can't write it. My bad. [Try me in Latin or French ;) ]...
On the other hand, I don't think it should be expected/required that any/all questions be posed in English. It is the Internet, after all.