Several Virtual Machines running in same process caused an error

Hey,I have Java SE 6 1.6.0_01 and I get Several virtual machines running in same process caused an error, I have 480MB of ram, Win XP and I have seen that you can change the runtime memory between certain amounts, how do you do this?Thanks
[260 byte] By [canter07a] at [2007-11-27 5:03:35]
# 1

suppose that you want to run the executable program MyApp.jar.

use this :java -XmsAAAm -XmxBBBm MyApp.jar

Where AAA is the JVM initial heap size

and BBB is the JVM maximum heap size

example:

java -Xms128m -Xmx256m MyApp.jar

Hope That Helps

java_2006a at 2007-7-12 10:21:40 > top of Java-index,Desktop,Runtime Environment...
# 2
Thanks, the problem happens when I try to run Page builder on Yahoo to create your own web page, how do I stop this error from happening?Thanks
canter07a at 2007-7-12 10:21:40 > top of Java-index,Desktop,Runtime Environment...
# 3
> I have Java SE 6 1.6.0_01 and I get Several virtual> machines running in same processhuh? is that a 1.6 feature? isn't each vm its own process? why would one do this vs. multi-thread?
developer_jbsa at 2007-7-12 10:21:40 > top of Java-index,Desktop,Runtime Environment...