Just go to "play" and right click it. Now click edit. A note pad should come up saying this:
@echo off
java -Xmx500m -cp .;Theme.jar Gui
exit
Now what you have to do is delete "java" and replace it with this:
"C:\Program Files (x86)\Java\jdk1.6.0_19\bin\java.exe"
or
"C:\Program Files\Java\jdk1.6.0_21\bin\java.exe"
It should end up loooking like this
@echo off
"C:\Program Files (x86)\Java\jdk1.6.0_19\bin\java.exe" -Xmx500m -cp .;Theme.jar Gui
exit
or
@echo off
"C:\Program Files\Java\jdk1.6.0_21\bin\java.exe" -Xmx500m -cp .;Theme.jar Gui
exit
REMEMBER this is only for Window's 7 if it crashes with either client!!!!!! Hope this helped you!!! Merry Christmas