motherboard help

[biferi]

I need help with a Onboard Video and my Video RAM. But befor I post it I need to know if anyone know about my Motherboard type so they can help.
In Video Adapters under Video Size it says I am useing 700 MB of my RAM for Video RAM.
Now even if I go into my BIOS and set it to 64 MB and save and restart I goback into System Properties and Adapters and it still says 700 MB Memory Size????

I have win xp pro 32 Bit and 4. GB of RAM installed. Two Sticks with 2. GB eatch.
Now I know windows xp 32 Bit can't see 4./ GB just 3.25 GB


Model
A780GM - A
Serial Number
K61110E83803609
Socket
AM 2. +
Memory Type
D.D.R 2. 400 MHz / D.D.R 2. 533 MHz
Memory Type Dual Channel
D.D.R 2. 667 MHz / D.D.R 2. 800 MHz
Memory Type Daul Channel Fastest
1,066 MHz AM 2. + only.
L.A.N Type
RJ 45 Ethernet 10 Mbps / 100 Mbps / 1,000 Mbps Gigabit.
Northbridge Chipset
A.M.D 780G
Southbridge Chipset
A.M.D SB700
Front Side BUS
2,600 MHz 5,200 MTps
Hypertransport 3.0 Data Tranfer Rate
32 Bit 20.8 Gbps Unidirectional.

Does anyone have this Motherboard
Model
A780GM - A
Serial Number
K61110E83803609


I called ECS and they are no help they don't no what they say???????