I can see that you're not familiar with Java Servlets and for such I would then recommend a nice Windows installer that not only Installs SolR, but also Apache.
http://bitnami.org/stack/solr
in a few clicks and no configuration changed, you will be up and running in a matter of minutes with a nice screen like:
By the way, Bitami not only provide you with a nice Windows Installer, but gives you as well a VM with Solr (so you can test it without screwing up your current system) plus a lot more methods to install and run SolR!