I\'m currently trying to tune my Eclipse installation and bumped into the \"-vm\" option. Other posts on SO mentioned that it\'s good to always use the latest JVM available
If you go to Help->'About Eclipse Platform' and click on the 'Configuration Details' button it will take a moment to display, but you get a dump of everything eclipse is configured for...
I found these 2 lines to be what you're looking for:
-vm
C:\Program Files\Java\jdk1.6.0_10\bin..\jre\bin\client\jvm.dll