HI JD
The first Christians were not infallible, nor were the Fathers. But the writings of the Fathers help us understand better the tenets of our faith as expressed in the Bible and Tradition. As a matter of fact they are precious witnesses to what we call Tradition, the parts of our faith that are not explicit in the Bible.
There is growing respect of the Fathers on the part of Protestants, but it is not surprising that some of the more radicals evangelicals should be wary as they recognize only the Bible as the source of truth.
It is important to understand that the Church does not accept every writing of a Father as gospel truth, But she recognizes the “consensus of the Fathers” as expressilng the mind of the Church, and that is infallible truth, since Christ guaranteed that he would be with us until the end of time.
For a good article in the Catholic Encycklopedia on this subject, go to
newadvent.org/cathen/06001a.htm
You might also consider buying the book by our own Jimmy Aklns :
The Fathers Know Best. See
catholicism.about.com/u/reviews/Catholic-Book-Reviews/Write-A-Review-Of-A-Catholic-Book/The-Fathers-Know-Best-by-Jimmy-Akin.htm