Google DNS (8.8.8.8 and 8.8.4.4) are blocked (or polluted) by all ISPs available to me (and DNS by ISPs just return wrong answers for some sensitive sites!!), and it is said that if we change DNS from UDP onto TCP, the problem can be temporarily solved.

My question is: how to config that on Windows 7?

The solution provided by the original post:

Windows 7 Ultimate

DnsApi.dll v6.1.7601.17570

.text:6DC08FC8 8B 46 10        mov     eax, [esi+10h]
.text:6DC08FCB 89 45 F4        mov     [ebp+var_C], eax

var_C -> 2

85A0: 90 90 90 90 90 -> 33 C0 40 EB 25
85C8: 8B 46 10 -> EB D6 40

_{I have not figure out how the original solution works so far. It needs to modify the .dll file, and the post provides a .dll after modification. However, I wish there was a solution without this kind of hacking.}