what do you mean no drivers? install your transmitter as a "generic" through the game controller config in your control panel

does windows even recognize the tx is plugged in?

if it does and fms just doesnt wanna recognize it there is a simple solution
search for a program online called JoyToKey its a universal joystick adaptation program
that will allow you to prgram what does what EG all the sticks correctly it will also allow you to use
the analogs correctly "proportional = analog to a pc"