Two Java versions on the same solaris box

Hi,How can I set up two instances (SUN One 8.1 Application Server EE) to use two different JVM's - I would like one to use 1.4 & anothe to use 1.5?This is on the same box (Solaris 10).DO I set it in the JVM Options of the AS ?
[259 byte] By [TS777] at [2007-11-26 11:38:28]
# 1
You need to have 2 separate file-based installations or 1 packaged and 1 file-based to accomplish that. The way to point appserver 8.x to the JDK which does not come default with appserver installation is to modify AS_JAVA environment variable in appserver_root/config/asenv.conf.
Sultal at 2007-7-7 11:38:10 > top of Java-index,Application & Integration Servers,Application Servers...