I am brand new to Modelica and to this forum and am having trouble getting the SimForge 0.9 graphical interface to load on a Windows Vista system.  When I double click the SimForge-0.9.0 RC2-installer, I get the following message:

"It looks like your system does not have a JAVA Development Kit (JDK) available.  The software you plan to install requires a JDK for both its installation and execution."

However, I have installed the JAVA SE Development Kit 6, Version 21 and it shows up in my system information and on my control panel. 

I have read through all the  entries in the Usage and Applications section of the forum.  The only subject close to my  installation problem appears to be mention of some issues with mingw quoted on page 9 as follows:

"There is a major problem with mingw and using spaces in path names.
So installing in C:\Program Files\ will not work. It's too bad the installer won't detect this and scream. Maybe we should look for spaces in OPENMODELICAHOME and generate better error messages..."

I do not understand this statement well enough to act on it.  I am sure I have some blank spaces in path names but cannot track down where the JDK is installed.  Nor am I even sure my problem is tied directly to this issue.

Any help would be greatly appreciated.