Running Windows 7 64-bit with a Radeon 5770... I'm just curious what CCC version I should be running to get the most efficiency?

I tried installing the latest CCC, then installing the Stream SDK 2.2 (since 2.3 lowers performance), but the miner came up with an error that there were multiple versions of Open CL, and I needed to select one.

What's the proper setup for a Windows machine?  Best CCC to use, best Stream SDK to use, and how to get them to interact with each other properly?

ccc 10.4, sdk 2.1 works fine for me. I get about 190 mhashes on 5770 (overclocked to 900 mhz).