Change the version of win2k to SP3.
Change the version of XP to SP1.
Modify values of XP according to a post by Philipp Wollermann.

diff --git a/misc/version.c b/misc/version.c
index ddd20c9..8bea96f 100644
--- a/misc/version.c
+++ b/misc/version.c
@@ -179,8 +179,8 @@
         0x08930005,
         {
             sizeof(OSVERSIONINFOA), 5, 0, 0x893,
-            VER_PLATFORM_WIN32_NT, "Service Pack 2",
-	    2, 0, 0, VER_NT_WORKSTATION, 30 /* FIXME: Great, a reserved field with a value! Is this correct? */
+            VER_PLATFORM_WIN32_NT, "Service Pack 3",
+            3, 0, 0, VER_NT_WORKSTATION, 30 /* FIXME: Great, a reserved field with a value! */
         }
     },
     /* WINXP */
@@ -190,8 +190,8 @@
         0x0A280105,
         {
             sizeof(OSVERSIONINFOA), 5, 1, 0xA28,
-            VER_PLATFORM_WIN32_NT, "",
-	    0, 0, 0, VER_NT_WORKSTATION, 0 /* FIXME: Verify last 5 values */
+            VER_PLATFORM_WIN32_NT, "Service Pack 1",
+            1, 0, VER_SUITE_SINGLEUSERTS, VER_NT_WORKSTATION, 30 /* FIXME: Great, a reserved field with a value! */
         }
     }
 };