Many of you, have this problem that is why i will be making this Guide Fix.
So let's start out, by making 2 topics:
This problem may be caused by:
1- You have a old version of java that doesn't let you run the client.
2- The client can't detect the java.exe file, that is located at "C:\Local Disk(x86)\Java\jre6\bin"

Q:. How can you see which problem do you have?
Answer:
By pressing this link this will check your java version, and if you don't have the latest it will automatically update to the latest.
http://www.java.com/en/download/installed.jsp?detect=jre&try=1IF IT WORKS YOU CAN STOP HERE!
--------------------------------------------------------
If this doesn't work, then your Client is missing Java.exe
Q:. How to fix java.exe Error?
Answer:
I made myself a easy source that loads every single server without needing to "edit" the "%run%.bat" icon.
1 - You can start out by
right clicking the
Computer icon and choosing the option
Properties:

2 - At the top left corner you will find many options choose
Advanced system settings option. This will open a identical window to this:


3 - Go to the
Advanced tab then choose the option
Environment Variables..., this will open a window sub-divided in two boxes like this:

4 - What we will make is a source that forces the java.exe to run, so we are gonna focus ourselves in both of the boxes Varibles
PATH - CLASSPATHNote: If you don't have any of these you can make them by pressing the button
New....
5 - The
FIRST BOX "User Variables":
You will have to
Edit... the
values:
Note: Copy / Paste the "values" down there.
CLASSPATH
value: CLASSPATH=C:\Program Files\Java\jdk1.6.0_20\bin;%CLASSPATH%;
PATH
value: C:\Program Files\Java\jdk1.6.0_20\bin;
6 - The
SECOND BOX "System Variables":
You will have to
Edit... the
values as well:
Note: Copy / Paste the "values" down there.
CLASSPATH
value: ;C:\Program Files (x86)\Java\jdk1.6.0_20\bin;C:\Program Files (x86)\Java\jre6\lib\ext\QTJava.zip
PATH
value: C:\Program Files (x86)\Java\jdk1.6.0_20\bin;C:\Program Files (x86)\Common Files\DivX Shared\;C:\Program Files (x86)\QuickTime\QTSystem\
7 - After Editing all that Variables you can
Save and Close all that Windows.
8 - Try to open your Client it should work properly now.

9 - Make sure you have Fun!
10 - If you liked the GUIDE give me some "Karma".
Hope this helped you.
Cumpz, Immortal.
-----------------------------------------------------------------------------------------------------------
Immortality it's a thing Pkers like me have.