diff --git a/PCbuild/BUILDno.txt b/PCbuild/BUILDno.txt
index 34a9ffa..7de90bd 100644
--- a/PCbuild/BUILDno.txt
+++ b/PCbuild/BUILDno.txt
@@ -33,6 +33,8 @@
 
 Windows Python BUILD numbers
 ----------------------------
+  11    2.1b1
+        28-Feb-2001
   10    2.1a2
         1-Feb-2001
    9    2.1a1
diff --git a/PCbuild/python20.wse b/PCbuild/python20.wse
index 1568c14..9e28fed 100644
--- a/PCbuild/python20.wse
+++ b/PCbuild/python20.wse
@@ -1,7 +1,7 @@
 Document Type: WSE
 item: Global
   Version=5.0
-  Title=Python 2.1 alpha 2
+  Title=Python 2.1 beta 1
   Flags=00010100
   Languages=65 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   Japanese Font Name=MS Gothic
@@ -64,7 +64,7 @@
 end
 item: Set Variable
   Variable=APPTITLE
-  Value=Python 2.1 alpha 2
+  Value=Python 2.1 beta 1
 end
 item: Set Variable
   Variable=GROUP
@@ -72,7 +72,7 @@
 end
 item: Set Variable
   Variable=PY_VERSION
-  Value=2.1a2
+  Value=2.1b1
 end
 item: Set Variable
   Variable=MAINDIR
diff --git a/PCbuild/pythoncore.dsp b/PCbuild/pythoncore.dsp
index 70f45e5..64c661c 100644
--- a/PCbuild/pythoncore.dsp
+++ b/PCbuild/pythoncore.dsp
@@ -739,11 +739,11 @@
 
 !IF  "$(CFG)" == "pythoncore - Win32 Release"
 
-# ADD CPP /D BUILD=10
+# ADD CPP /D BUILD=11
 
 !ELSEIF  "$(CFG)" == "pythoncore - Win32 Debug"
 
-# ADD CPP /D BUILD=10
+# ADD CPP /D BUILD=11
 
 !ELSEIF  "$(CFG)" == "pythoncore - Win32 Alpha Debug"