Accessing Video/VGA ports

Hi Techies,

I want to access the VGA ports of my Motherboard.I have Windows2000
installed with Intell Video Card.

If I view the resource tabs of my PC in the display section I find the
Resource I/O Address as

I/O Ranges : 0x3B0-ox3BB
I/o Range : 0x3D0-0x3DF

Is this adress in I/o space of the Operating system.If yes can I use

WRITE_PORT_UCHAR(PortAddress, Data);
READ_PORT_UCHAR(portAddress);

I have tried making the driver doing this but shows me no effect on
the VGA ports.
And could anyone lease drop me some idea about how these ports are
mapped.

Like ::: Port1 (VGA) ---> ox3D0
port2 --------->0x3d1

something like this.

Thanks and best regards,
sonu