I don't know what the hell's going on

i was trying to get Arkham Asylum working so i downloaded the latest physX driver. And when the license agreement comes up i just can't press the next button!!!!
No matter what i do and no matter how long i wait i just can't press it!!!
Restarting didn't work. I even ininstalled the driver i already had and it didn't work.
OS is vista home premium and i have a 9600GT.
p.s: yes i tried googling for it and nothing came up

except for this one guy who had the same problem but then said that it was a memory issue.