javascript vs vbScript

under view->internet option ->advance in IE
there is one part call java VM.. what is this java VM for and what does the options below stand for? is it possible that one day in the future there will be such thing for VBscipt or VB?

as i know, netscape didn't suppport VBscript and we need plugin in from netscape in order to view a web page containing VBscript? what type of plug-in is it? as i went through a list of pulg-in in netscape, i still dunno which one should i pick?

thanks in advance for all ur help...
cheers!!

^o^..shvonne