$HTTP["host"] =~ "textdrive.(org|com)" {
server.indexfiles          = ( "dispatch.fcgi", "index.php" )
server.document-root             = "/users/home/website/web/public/"
url.redirect = ( "^/forum/(.*)" => "http://forum.textdrive.com/$1",
                 "^/support/(.*)" => "http://support.textdrive.com/$1" )
#url.rewrite = ( "^/$" => "index.html", "^([^.]+)$" => "$1.html" )
server.error-handler-404   = "/dispatch.fcgi"
fastcgi.server = (
               ".fcgi" =>
                    ( "localhost" =>
                        (
                            "socket" => "/tmp/textdrive-new.socket",
                            "bin-path" => "/users/home/website/web/public/dispatch.fcgi",
                            "bin-environment" => ( "RAILS_ENV" => "production" )
                        )
                    ),
".php" =>
                    ( "localhost" =>
                        (
                            "socket" => "/tmp/textdrive-php5-fcgi.socket",
                            "bin-path" => "/usr/local/www/cgi-bin/php5-fcgi",
                            "bin-environment" => (
                            "PHP_FCGI_CHILDREN" => "4",
                            "PHP_FCGI_MAX_REQUESTS" => "5000"
                                                 )
                        )
                    )
)
}

If you want to add a virtualhost on your Mac OS X box without having to wait around for ages, then the easiest way to do so is to shove a line into /etc/hosts and flush the dnscache. Here's a friendly bash function to throw into your .bashrc:

function edithosts {
        if [ -x "`which $EDITOR`" ] || [ -x "`which $1`" ]
        then
                if [ -x "`which $EDITOR`" ]
                then
                        export TEMP_EDIT="`which $EDITOR`"
                else
                        export TEMP_EDIT="`which $1`"
                fi
                echo "* Using ${TEMP_EDIT} as editor"
                $TEMP_EDIT /etc/hosts && echo "* Successfully edited /etc/hosts"
                lookupd -flushcache && echo "* Flushed local DNS cache"
        else
                echo "Usage: edithosts [editor]"
                echo "(The editor is optional, and defaults to \$EDITOR)"
        fi
        unset TEMP_EDIT
}

More simply, you can just flush the DNS cache manually with:

lookupd -flushcache

Using lighttpd's mod_evhost with

# %% => % sign
# %0 => domain name + tld
# %1 => tld
# %2 => domain name without tld
# %3 => subdomain 1 name
# %4 => subdomain 2 name
#

$HTTP["host"] =~ "jasonhoffman.org" {
evhost.path-pattern        = "/home/jah/public/%3/"
}