computer probs

hi
HELP!
I’ve installed my ch pro yoke. i’m running xp.
i’m trying to install ch pro pedals.
in the controll panal in add game controllers i’ve pushed add ch pro pedald.
then ticked enable rudders & pedals
ok
it comes up with, missing gameport or driver.
i’ve tryed installing chanlgo8.exe
i get as far as the download indecators and then get a pop up with
installation of the drivers for the ch gameport drivers has been cancelled.

so have to fly with out pedals.
can any one help by giving me some advice to sort this.
thanks

bob