diff --git a/source/workspaces/required libraries.txt b/source/workspaces/required libraries.txt
index 65268987d5..cf9ecdf42e 100755
--- a/source/workspaces/required libraries.txt	
+++ b/source/workspaces/required libraries.txt	
@@ -6,12 +6,12 @@ pass = ae3934hjf
 
 $install := directory where the compiler is installed.
 $lib := directory where the compiler looks for lib files;
-  typically = $install\lib .
-$include := the same for header files (= $install\include).
+  typically = $install/lib .
+$include := the same for header files (= $install/include).
 $GL := directory containing OpenGL headers.
-  VC6: $install\GL;
-  VC7: $install\PlatformSDK\Include\GL.
-$binaries := directory containing system\ and data\ .
+  VC6: $install/GL;
+  VC7: $install/PlatformSDK/Include/GL.
+$binaries := directory containing system/ and data/ .
 
 
 TODO:
@@ -19,17 +19,17 @@ TODO:
 - OpenGL extensions:
   download glext.h and put it in $GL .
 
-- ZLib (v1.1.4.8751)
-  download zlib.zip; extract headers into $include,
-  lib files into $lib, and DLLs into $binaries.
-  If you get an error 'zlib.dll not found', rename zlib-1.dll to zlib.dll
-    in directory $binaries (cause of the error is unclear ATM).
+- ZLib (v1.2.1)
+  download zlib121.zip.
+  extract contents of include/ into $include,
+  .lib files into $lib, and .DLLs into $binaries.
 
-- libpng (v1.2.4)
-  download libpng.zip; extract headers into $include,
-  lib files into $lib, and DLLs into $binaries.
+- libpng (v1.0.15)
+  download libpng10.zip.
+  extract contents of include/ into $include,
+  .lib files into $lib, and .DLLs into $binaries.
 
 - Xerces: [required if compiling GUI]
-  download xerces-c_2_3_0-win32.zip .
-  put xerces-c_2.lib in $lib, and xerces-c_2_3_0.dll in $binaries;
-  copy xerces-c_2_3_0-win32\include\* into $include .
\ No newline at end of file
+  download xerces-c_2_5_0-windows_nt-msvc_60.zip.
+  extract contents of include/ into $include,
+  .lib files into $lib, and .DLLs into $binaries.