silkroad.exe error

[_HeLLioN_]

So I posted something about this a few weeks ago on SilkRoadOnline.net forums and never got a straight answer, so I'm turning here.

When a friend of mine tries to run SilkRoad, he gets an error which says Please execute silkroad.exe

Now, some information.

He has no firewall, his antivirus is up to date, Direct X is up to date.

He has uninstalled and reinstalled numerous times, to no effect.
One weird thing though, every time he reinstalls, he is missing a folder inside of his SilkRoad folder.

Also, in his system32 folder, there is no drivers folder, thus he cant find a hosts document to edit.

How does he fix this?