Getting two joystick to work?

[BadBen]

I have the Wingman Interceptor (serial, for game like X-Wing Alliance, Freesapce 2) and the F-15 Talon (USB, for game like USAF, F-15 and FA-18) Im trying to install both on my pc at the same time. X-wing Alliance says that I have no joystick when both are insall but when one are install it work fine.I dont wantt to disconnect every time one of the joystick.

Thank You.