I have read the FAQ already, but get confuse with the steps, I am using Win7 and I cannot create text file in "C:\Program Files (x86)\Sweet Home 3D"

Hello,

Can someone teach me?

1.Where can I find the folder "SweetHome3D.exe"
2.How to write Java option in that file?
3.I have installed "64 bits version of Java" and downloaded the Jar executable version, how to execute the java to 2G or more? Is it automatic?

Many Thanks
Xpat