The graphicx package provides \includegraphics to include images on the cover or inside the document. And the titlepage environment specifies your cover page. (Since this is a recurring problem at institutions, your advisor probably has examples for such cover pages. But a lot of bad code gets passed around this way.)
\documentclass{report}
\usepackage{graphicx}
\begin{document}
\begin{titlepage}
\centering
\vfill
{\bfseries\Large
Performance Report\\
First Quarter 2011\\
\vskip2cm
A. Uthor\\
}
\vfill
\includegraphics[width=4cm]{logo.jpg} % also works with logo.pdf
\vfill
\vfill
\end{titlepage}
\end{document}
The \vfills adjust the vertical spacing. Think about them this way: each \vfill will expand vertically the same amount until the entire page is filled. Because there are two \vfills at the bottom, title and logo will not be vertically centered but rather shifted towards the top. Using \vfill is much simpler than using absolute dimensions and works with all page dimensions. (I still used \vskip2cm to specify the distance between title and author, though.)