HElp.AMD stream SDk wont install and poor mining performance

[film2240]

I need help

When I installed all drivers for my Radeon HD6950 card,the catalyst log showed that installation completed with warnings. I clicked to see what it was,and it said that 'AMD APP SDK Runtime failed to install'

What is this?and how can it affect apps like GUIMiner and Media Expresso?

Installer was run with admin rights (UAC disabled as well) on Win 7 64bit.

What can I do to make this work?

Also mining performance is poor as it's only 292MHash/s at best at the moment.

What do I need to do in either:
catalyst or GUIminer (what flags should I use that will boost performance and keep temps under control)?