"C:\Program Files\Java\jre6\bin\java.exe"" -Xms564M -Xmx564M -jar Minecraft.jar
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)

where options include:
-server to select the "server" VM
-hotspot is a synonym for the "server" VM [deprecated]
The default VM is server.

-cp ‹class search path of directories and zip/jar files›
-classpath ‹class search path of directories and zip/jar files›
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D‹name›=‹value›
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-version:‹value›
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -jre-no-restrict-search
include/exclude user priva
te JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:‹packagename›...|:‹classname›]
-enableassertions[:‹packagename›...|:‹classname›]
enable assertions
-da[:‹packagename›...|:‹classname›]
-disableassertions[:‹packagename›...|:‹classname›]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:‹libname›[=‹options›]
load native agent library ‹libname›, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:‹pathname›[=‹options›]
load native agent library by full pathname
-javaagent:‹jarpath›[=‹options›]
load Java programming language agent, see java.lang.instrument
-splash:‹imagepath›
show splash
screen with specified image

что тут нужно сделать?