Were the wireless drivers processed by Dism during build ?
After booting with pe3_x86.iso you can use Driver Fix from desktop to install the drivers and start WLAN Service.
Check in Device Manager if your Network card is installed.
See if your netdriver.inf is located in X:\Windows\inf folder.
Start PENetwork is neede for Connect and Authentication.
Program AddOnns are preferred to be portable and go in PStart menu.
Sorry for the delay in reply but I fixed this by putting it in a folder Make_PE3\PE3_mod\WIN7_drivers\x86\W\ and then made another folder called IW and dropped the driver files in there. When I packaged it all together it worked fine and installed the drivers on boot.
I was trying to put the drivers folder in the x86 folder where the text file said you could.....but it never worked until I moved it down a tier
PS is there any more additions in the pipeline for the future ?