IGP and external GPU working together?

Well, here is the situation: there are ati express 1250 igp and radeon HD2600 GPU in my ASUS F3Ka laptop. While working with GPU my laptop lasts about 2 hours, but when I switch to igp( I can do that only while rebooting) it can hold up up to 3 hours. Thats a pritty dramatic increase as you see. But just like always, there are some bad news too: ccc won't open no matter what, not even ccc-wizard. Does any one know how to fix it?
P.S. I'm running Vista. Thanks

 

The F3ka has switchable graphics? Interesting, I've never heard about that on anything but the SZ and U3, that's pretty cool, especially on a larger notebook like the F3.

Perhaps try using other drivers like Omega?

 

I haven't tried omegas, but I've tried moded ati desktop 7.10 and 7.9 drivers. Both installs and works just fine, but only one gpu works that way( the one that's been on while installing drivers). I can properly swith between them only with asus default drivers, that are quite old - 7.5. What's strange here , is that those drivers installs itself automaticly after each reboot, when other drivers, for example 7.10, don't recognise the other gpu. So I had to reinstall drivers on my notebook a lot today . I supose that I will have to wait for some new asus oficial drivers. Thought I'm not counting on it.