This will do nothing useful as the menu.lst file will be deleted along with the rest of the / partition.
I think he already deleted the PCL partition. I believe that's the / partition you are talking about. This is why he can't boot. Configure Computer -> Boot -> Set up boot system will write a new menu.lst to the existing partition which is his W7. That should get grub to boot windows, right? Remember, he's trying to uninstall PCL.
The PCLOS installation was deleted, then restored/reinstalled along with a new grub install, in order to temporarily boot Windows. When the PCLOS installation is again removed, grub will again be non functional, which is why the Windows boot code
needs to be in the MBR
. This has now all been done, and JakeLogan
has what he needed to proceed with his backup of the Win7 system