Well maybe you will have to. It seems that the shared componant MS VC runtimes fails to install. That's not good.
Please provide more info. What processor? What graphics card? Other system components that may be relevant? What version of Vista? Is it properly updated? Do you run as administrator? In any case, run the CS4 Clean Script. Then go to the Microsoft site and download the standalone installer for MS Visual C Runtime 8.0 and install it. See, if it makes any difference.