Mirroring the display

Dear all,

I would like to capture the primary display and send it over the
network. All the primary display will be mirroring in the network pcs.

Functionality is exactly as same as VNC.
Remote pc should have control and events of
primary display as like as VNC.

I have a few ideas but not sure about it.

i) Accessing the framebuffer and sending it across the network.

    Doubts in this approach:

       1. Will it be a generic solution as hardware independent?
       2. Will it be fast?
       3. Will i be able to control and events from the remote pc as like as
VNC?
       4. Do i need to change any configurations? any configuration
dependent?

       5.Is  it feasible?



ii) Accesing the X Window, hooking it and sending it across the network as
VNC does.

       1.Will it be fast?

       2.Is it feasible?


Can anybody suggest me the best way to do this?

Where can i start now?

Thanks in advance,

selva