Have you installed any kits?
I do not understand your question? I did not have to install any kit, on other PCs I just installed PSoC creator and this option was not grayed out.
Can you please provide details about your system like OS,.NET version ,RAM etc.
If possible try to reinstall Creator4.0 from this link-
Kit download for example means CY8CKIT-059 Kit Only (Kit Design Files, Documentation, Examples) from this link -