diff --git a/INSTALL b/INSTALL
index ca69b87..0a512b4 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.0.6 - March 21, 2000
+Installing libpng version 1.0.6a - April 2, 2000
 
 Before installing libpng, you must first install zlib.  zlib
 can usually be found wherever you got libpng.  zlib can be
@@ -10,7 +10,7 @@
 version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.0.6" or "lpng106" and "zlib-1.1.3"
+might be called "libpng-1.0.6a" or "lpng106" and "zlib-1.1.3"
 or "zlib113") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -47,8 +47,8 @@
 include
 
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
- makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6)
- makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6,
+ makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6a)
+ makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.6a,
                        uses assembler code tuned for Intel MMX platform)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
@@ -56,11 +56,12 @@
                        ftp://ftp.cs.wisc.edu/ghost)
  makefile.dec      =>  DEC Alpha UNIX makefile
  makefile.hpux     =>  HPUX (10.20 and 11.00) makefile
- makefile.ibmvac3  =>  IBM VisualAge/C++ version 3.x for Win32 and OS/2 (static)
+ makefile.ibmc     =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
+ libpng.icc        =>  Project file for IBM VisualAge/C++ version 4.0 or later
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
- makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.6)
+ makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.6a)
  makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.6)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.6a)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.mips     =>  MIPS makefile
  makefile.acorn    =>  Acorn makefile