Recompiled OpenSSL with VC++2008 and updated upgrade-guide.txt to reflect build changes between VC++2005 and 2008. I meant to do this sooner, but it slipped my mind. Thanks to Thomas and Jah for discussing it.

mswin32/OpenSSL/upgrade-guide.txt

@@ -12,17 +12,9 @@ II. Compiling OpenSSL from source
 
 2) Grab and extract the latest sources from openssl.org
 3) Create C:\OpenSSL for installation
-4) Open the Visual Studio command prompt
-5) Set the required variables:
-
-  Set MSSDK=C:\Program Files\Microsoft Platform SDK
-  Set Lib=%MSSDK%\Lib;%Lib%
-  Set Include=%MSSDK%\Include;%Include%
-
-Note: Depending on your system you may need to change the SDK directory
-
-6) cd to the OpenSSL source directory
-7) Configure OpenSSL
+4) Open the Visual Studio 2008 command prompt
+5) cd to the OpenSSL source directory
+6) Configure OpenSSL
 
   perl Configure --prefix=C:/OpenSSL VC-WIN32
   ms\do_ms
@@ -30,14 +22,14 @@ Note: Depending on your system you may need to change the SDK directory
 Note #1: The slash after the C: in the configure line is significant
 Note #2: You can safely ignore "Compilation failed" messages from do_ms
 
-8) Compile and Install OpenSSL
+7) Compile and Install OpenSSL
 
   nmake -f ms\ntdll.mak install
 
 
 III. Making OpenSSL available to Nmap
 
-9) Copy the required files from C:\OpenSSL to Nmap's mswin32\OpenSSL directory
+8) Copy the required files from C:\OpenSSL to Nmap's mswin32\OpenSSL directory
 
   \OpenSSL\bin\*.dll -> mswin32\OpenSSL\bin
   \OpenSSL\include   -> mswin32\OpenSSL\include