Avid Pro Audio Community - mbox 2. Installed protools 8, now cubase won't work

So I installed Protools 8 for the single reason of using the free version of the eleven guitar amp, I previous used the digidesign standalone drivers for XP(I use Win XP) and cubase was working with those drivers but not great. After I installed protools 8 audio drivers no sound in cubase, the driver show up and everything looks fine, but no sound. Anyone knows a fix?

Maybe i will just switch to using protools cus the standalone drivers is pretty crappy and i get high latency, i will be making anonther thread about this, to ask you guys about what operatins system is required and so on.