Help with Thermal folder settings

I downed
FSX/2004/FS2002 Whole Minnesota , Soaring Scenery.
http://www.simviation.com/simviation/st ... 45&page=38
It says I have to "activate Thermals folder using Settings"
I have FSX I do not see that setting anywhere.
can some one help with this.
Thanks.
FSX/2004/FS2002 Whole Minnesota , Soaring Scenery.
http://www.simviation.com/simviation/st ... 45&page=38
It says I have to "activate Thermals folder using Settings"
I have FSX I do not see that setting anywhere.
can some one help with this.
Thanks.