I´m having a weird error with the wonderful MikTeX software in Windows XP Professional in portuguese because it requests a file named (.cls that is anywhere in the documentr or in the hard drive.  Is this a bug or there is another way to fix it please? Thank you very much indeed.
Sincerely yours,
André Luiz
Prof. André Luiz Tietbohl Ramos, M.Sc.
Ph.D. Candidate
Industrial and Systems Engineering Department
Virginia Tech
Professor, Departamento de Engenharia Mecânica e Engenharia Mecatrônica - PUC/RS