The tampering unchecking may be because of we are talking about WinPE (and not "full" Windows 8) or because is a win 32 bit platform (where driver signing is not mandatory) or both. benato
In the next days I'll try changing some of these conditions.
By the way, the same workaround of disabling MSISupport succeded with the built-in ndis6.0 driver that came with Winpe4.0 (e1e6032.sys, nete1e32.inf, DriverVer=04/19/2011,9.13.41.1). In this case, just to be sure about the extension of tampering unchecking I changed the inf file in three different locations, may be innecessarily for our goal of influencing plug and play configuration but as i said, I wanted to evaluate the scope og inf checking)
1) Windows\Inf
2) Windows\System32\DriverStore\FileRepository\nete1e32.inf_x86_ed0b420b393e2b67\
3) Windows\WinSxS\x86_nete1e32.inf_31bf3856ad364e35_6.2.9200.16384_none_43b211231ca14501
I'll keep posted news
Antonio