I have installed the LimeWire basic version 5.5.14 on my desktop computer. I have a Micromax USB 3g modem with Vodafone sim card inside to use internet. After installation , when I tried to start LimeWire it gave the following error message ==>

LimeWire Launcher Error : LimeWire needs the Java Runtime Environment 6.0 or above. Click OK to go to java.com: Java + You , where you can install Java.

I am also learning Java language therefore I have already installed JDK1.6.0 and JRE1.6.0 on my computer. Now if I try to install Java as directed by Launcher Error , the computer gives the meesage that the software is already installed on the computer and refuses to reinstall the Java. I am perplexed. What should I do now ?