Java 7 Server SE JRE installation

Java 7 Server SE JRE installation

I want to install Java 7 Server SE JRE on a Windows server box. Reading
through the instructions here:
http://docs.oracle.com/javase/7/docs/webnotes/install/windows/server-jre-installation-windows.html
It says to: The Server JRE files are installed in a directory called
jdk1.7.0_ in the current directory.
However, there's a lot of stuff in that tar file. I just want to use the
jre folder right under jdk1.7.0_.
Can I just copy over /jdk1.7.0_/jre and it's subfolders? Are there any
downstream impacts I should be aware of, in terms of security and
performance? Or any other issues besides the loss of functionality?
Ultimately, I want to point Tomcat to jre/bin/server/jvm.dll.
Thanks!