如何为特定的Windows sdk设置vs2013目录？

您好

我刚刚安装了vs2013 Express（Windows桌面），我在机器上的Windows sdk，6， 7，和8. 

I just installed the vs2013 Express (windows desktop) and I have on the machine windows sdk, 6,7, and 8. 

正如我所看到的，vs2013用于sdk的目录是针对版本8.1的，但我希望它能与windows sdk 7.1一起使用，我该怎么办呢？   IDE无法通过项目属性页面更改宏值，即使有很多
宏需要更改（WindowsSDK_XXXX）。有没有一点我可以定义sdk版本，所以vs2013将使所有相关的宏具有相应的路径值？

As I can see, the directories vs2013 uses for sdk are for version 8.1, but I want it to work with windows sdk 7.1, how can I do it?  the IDE doesn't enable changing macros values through project property pages,  and even though, there are lot of macros which need to be changed( WindowsSDK_XXXX ). Is there any one point that I can just define the sdk version so vs2013 will make all relevant macros with the corresponding paths values?

谢谢