diff --git a/INSTALL b/INSTALL
index d4aa93d11f..d9f7963ec4 100644
--- a/INSTALL
+++ b/INSTALL
@@ -5,34 +5,44 @@ Installing Bro
 Prerequisites
 =============
 
-Bro relies on the following libraries and tools, which need to be installed
+Bro requires the following libraries and tools to be installed
 before you begin:
 
     * CMake 2.6.3 or greater            http://www.cmake.org
 
-    * Libpcap (headers and libraries)   http://www.tcpdump.org
+    * Perl  (used only during the Bro build process)
 
-    * OpenSSL (headers and libraries)   http://www.openssl.org
+    * Libpcap headers and libraries     http://www.tcpdump.org
 
-    * SWIG                              http://www.swig.org
+    * OpenSSL headers and libraries     http://www.openssl.org
+
+    * BIND8 headers and libraries
 
     * Libmagic
 
     * Libz
 
-Bro can make uses of some optional libraries if they are found at
-installation time:
+    * SWIG                              http://www.swig.org
 
-    * LibGeoIP  For geo-locating IP addresses.
-
-Bro also needs the following tools, but on most systems they will
-already come preinstalled:
-
-    * Bash  (For Bro Control).
-    * BIND8 (headers and libraries)
     * Bison (GNU Parser Generator)
+
     * Flex  (Fast Lexical Analyzer)
-    * Perl  (Used only during the Bro build process)
+
+    * Bash  (for BroControl)
+
+
+Bro can make use of some optional libraries and tools if they are found at
+build time:
+
+    * LibGeoIP (for geo-locating IP addresses)
+
+    * gperftools (tcmalloc is used to improve memory and CPU usage)
+
+    * sendmail (for BroControl)
+
+    * ipsumdump (for trace-summary)     http://www.cs.ucla.edu/~kohler/ipsumdump
+
+    * Ruby executable, library, and headers (for Broccoli Ruby bindings)
 
 
 Installation
@@ -44,7 +54,7 @@ To build and install into ``/usr/local/bro``::
     make
     make install
 
-This will first build Bro into a directory inside the distribution
+This will first build Bro in a directory inside the distribution
 called ``build/``, using default build options. It then installs all
 required files into ``/usr/local/bro``, including the Bro binary in
 ``/usr/local/bro/bin/bro``.
@@ -60,22 +70,22 @@ choices unless you are creating such a package.
 Run ``./configure --help`` for more options.
 
 Depending on the Bro package you downloaded, there may be auxiliary
-tools and libraries available in the ``aux/`` directory. All of them
-except for ``aux/bro-aux`` will also be built and installed by doing
-``make install``.  To install the programs that come in the
-``aux/bro-aux`` directory, use ``make install-aux``. There are
+tools and libraries available in the ``aux/`` directory. Some of them
+will be automatically built and installed along with Bro. There are
 ``--disable-*`` options that can be given to the configure script to
-turn off unwanted auxiliary projects.
+turn off unwanted auxiliary projects that would otherwise be installed
+automatically.  Finally, use ``make install-aux`` to install some of
+the other programs that are in the ``aux/bro-aux`` directory.
 
-OpenBSD users, please see our `FAQ
-<http://www.bro-ids.org/documentation/faq.html>` if you are having
+OpenBSD users, please see our FAQ at
+http://www.bro-ids.org/documentation/faq.html if you are having
 problems installing Bro.
 
 Running Bro
 ===========
 
 Bro is a complex program and it takes a bit of time to get familiar
-with it.  A good place for newcomers to start is the Quickstart Guide
+with it.  A good place for newcomers to start is the Quick Start Guide
 at http://www.bro-ids.org/documentation/quickstart.html.
 
 For developers that wish to run Bro directly from the ``build/``
diff --git a/configure b/configure
index b6af505ffe..85b6af2d7d 100755
--- a/configure
+++ b/configure
@@ -32,7 +32,7 @@ Usage: $0 [OPTION]... [VAR=VALUE]...
     --enable-perftools-debug use Google's perftools for debugging
     --disable-broccoli     don't build or install the Broccoli library
     --disable-broctl       don't install Broctl
-    --disable-auxtools     don't build or install auxilliary tools
+    --disable-auxtools     don't build or install auxiliary tools
     --disable-python       don't try to build python bindings for broccoli
     --disable-ruby         don't try to build ruby bindings for broccoli