I have had many of these people before... Nothing against you.
What you have to do is update your java (JRE).
To do that. Go to this page:
http://www.oracle.com/technetwork/java/javase/downloads/jre7u9-downloads-1859586.htmlThan download the version that is compatible with your computer. If you are using windows 7, Download the (windows x64) one. If you are older than windows 7 download the (windows x86 offline) one.
Than in the run.bat in the client folder, right click on the run.bat and click edit. Then locate your new java you updated which should most likely be in (C:\Program Files\Java\Jre7). If it is not, check (C:\Program Files (x86)\Java\Jre7).
Than go into Jre7 folder and than go into the bin and copy that path.
Just to make it simpler, In your run.bat edit, delete my path that I already have in there (KEEP THE 2 QUOTATION MARKS THERE!!!!) And paste this in between the 2 quotation marks:
C:\Program Files\java\jre7\bin\java.exe
If that does not work, Paste this one:
C:\Program Files (x86)\java\jre7\java.exe
That should make it work! If this didn't make it work... Reply to this and go download teamviewer and ill be glad to help you via teamviewer.