I wanna create a thread for a user mode process through kernel mode driver, how do i implement this?

I wanna force a thread to execute its APCs through kernel mode.
I know that i have to set this thread to delay and alterable state, but I don't know haw can i do this?

I used "Zw or NtquerySystemInformation" to obtain all the object handles but for using of NtquerySystemInformation the return value is NULL and for using of ZwquerySystemInformation some parts of return value is NULL or its memory is access denied. The structure of the return value was cas...