Update example to VC 7.1. Will backport to 2.4.
diff --git a/PC/example_nt/example.sln b/PC/example_nt/example.sln
new file mode 100644
index 0000000..e78c0e3
--- /dev/null
+++ b/PC/example_nt/example.sln
@@ -0,0 +1,21 @@
+Microsoft Visual Studio Solution File, Format Version 8.00
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example", "example.vcproj", "{A0608D6F-84ED-44AE-A2A6-A3CC7F4A4030}"
+ ProjectSection(ProjectDependencies) = postProject
+ EndProjectSection
+EndProject
+Global
+ GlobalSection(SolutionConfiguration) = preSolution
+ Debug = Debug
+ Release = Release
+ EndGlobalSection
+ GlobalSection(ProjectConfiguration) = postSolution
+ {A0608D6F-84ED-44AE-A2A6-A3CC7F4A4030}.Debug.ActiveCfg = Debug|Win32
+ {A0608D6F-84ED-44AE-A2A6-A3CC7F4A4030}.Debug.Build.0 = Debug|Win32
+ {A0608D6F-84ED-44AE-A2A6-A3CC7F4A4030}.Release.ActiveCfg = Release|Win32
+ {A0608D6F-84ED-44AE-A2A6-A3CC7F4A4030}.Release.Build.0 = Release|Win32
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ EndGlobalSection
+ GlobalSection(ExtensibilityAddIns) = postSolution
+ EndGlobalSection
+EndGlobal