openvpn安装时报错：unable to install TAP-Win32 adapter driver的解决办法

http://forums.techguy.org/windows-xp/235959-cannot-find-file-specified-during.html
按照如上链接中的方法：
Go to Start » Run and enter "regedit."
打开注册表：开始-->运行 输入regedit，回车

Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
找到上述注册表项

With CurrentVersion Highlighted, go to the Edit menu and select New » Key


Name the key RunOnce, leaving everything else about the key alone.
在currentVersion项下再建一个名为：RunOnce的项，其他值不用管

The RunOnce key should now exist underneath the CurrentVersion key.
Once the key exists, Windows 2000/XP stops redetecting the Hardware
然后再重新安装vpn即可成功了