assignment.tex

\documentclass{ou-assignment}

\student{My Name}
\email{[email protected]}
\identifier{B1234567}
\course{M248}
\tma{1}
\tmapart{1}
\date{January 20, 2011}

\begin{document}

\titlepage

\question

This is a auto incrementing numbered question section e.g. "Question 1" 

\subquestion

This is a auto incrementing numbered sub-question section e.g. "(a)" 

\subsubquestion

This is a auto incrementing numbered sub-sub-question section e.g. "(i)" 

\end{document}

ou-assignment.cls

\ProvidesClass{ou-assignment}

\LoadClass[12pt]{article}

% PDF Stuff
\usepackage[pdfborder={0 0 0}]{hyperref}

\usepackage{fancyhdr}

% spacing
\usepackage{setspace}
\onehalfspacing

% paragraphs
\setlength{\parindent}{0pt}
\setlength{\parskip}{1ex plus 0.5ex minus 0.2ex}

% margins
\usepackage[top=1in,bottom=1in,left=1in,right=1in]{geometry}

% Student, Course & Assignment
\makeatletter

    \newcommand{\student}[1]{\def \@student {#1}}
    \newcommand{\email}[1]{\def \@email {#1}}
    \newcommand{\identifier}[1]{\def \@identifier {#1}}
    \newcommand{\course}[1]{\def \@course {#1}}
    \newcommand{\tma}[1]{\def \@tma {#1}}
    \newcommand{\tmapart}[1]{\def \@tmapart {#1}}

    % Student info
    \newcommand{\studentinfo}{
        \ifdefined \@email
            \href{mailto:\@email}{\@student, \space \@identifier}
        \else
            \@student, \space \@identifier
        \fi
    }

    % Student title
    \newcommand{\tmatitle}{
        TMA \@course \space \two@digits{\@tma}
        \ifdefined \@tmapart
            \space - Part \@tmapart
        \fi
    }

\makeatother

% Title Page
\renewcommand{\titlepage}{
    \author{\studentinfo}
    \title{\tmatitle}
    \maketitle
    \thispagestyle{empty}
}

% Headers
\pagestyle{fancyplain}
\fancyhf{}
\lhead{\fancyplain{}{\tmatitle}}
\rhead{\fancyplain{}{\studentinfo}}
\cfoot{\fancyplain{}{\thepage}}

% Question (section) headers
\newcounter{questioncounter}
\newcounter{subquestioncounter}[questioncounter]
\newcounter{subsubquestioncounter}[subquestioncounter]

\newcommand{\question}{
    \addtocounter{questioncounter}{1}
    \noindent{\large \textbf{Question \arabic{questioncounter}}}
}

\newcommand{\subquestion}{
    \addtocounter{subquestioncounter}{1}
    \noindent{\textbf{(\alph{subquestioncounter})}}
}

\newcommand{\subsubquestion}{
    \addtocounter{subsubquestioncounter}{1}
    \noindent{\textbf{(\roman{subsubquestioncounter})}}
}

\makeatletter and \makeatother not required