PXEMenu Image script

I have edited the PXEmenu file to include a submenu for a WIndows 7 Image script. I have created the cfg file and have it pointing to the w7x86.s file but it can't seem to find the script. I have basically copied the Z_auto.cfg file but the end now has IMGCMD="w7x86.s" added. I have placed the script at the root of the tftp folder where the pxemenu file is located.

Is this not the correct area? Is there a better way to launch the image script for this menu?