How can I upgrade OS X Snow Leopard 10.6.0 to 10.6.6 I need install an older version of XCode. I tried a lot of thing, but the XCode aways show a message saying I can't install it.

Now I want to try another thing. I have the install DVD of OSX 10.6 (Snow Leopard). If I use the Software Update program, it will update to 10.6.8. But the XCode needs only the version 10.6.6.

How can I upgrade from 10.6 to 10.6.6 but not to most newer 10.6.8? Is it possible?
You can download the 10.6.6 combo update from here:

http://support.apple.com/kb/DL1349