Bios Mods -The Best BIOS Update and Modification Source

Hi
trying to install a retail windows 8, but it fails due due pae not being enabled, as it needs to be enabled in a bios.
I have acer c300 tablet pc where bios was updated in 2005,seems very minimal access to make any bios changes, there is no advanced settings can anyone help?

BIOS Type: Phoenix
BIOS ID: MONTARA0.86C.1009.D.0501051913
BIOS Date: 2005.01.05
BIOS Vendor: Acer
BIOS Version: V1.13
BIOS Size: 524288
Chipset: Intel 3580 rev 2
Motherboard Name: Acer
Motherboard Model: TravelMate C300
System Name: Acer
Base Manufacturer: Acer
Base Product: TravelMate C300

Anyone help? need enable nx pae menus, advanced features limited on acers 1.13 version.

heres the bios

ftp://ftp.work.acer-euro.com/notebook/Tr...201.13.zip