[c-nsp] Inter VRF Routing help needed

[cc loo]

Hi All,
im pretty new to networking and require some assistance here with VRF-lite

Scenario :

i would like to establish a hub-and-spoke topology with multiple VRFs.

vrf_Hub is created, with interface fa0/0 and ip address of 10.0.0.1/24

vrf_customer_A is created with interface fa0/1.1 and ip address of
192.168.1.1/24
vrf_customer_B is created with interface fa0/1.2 and ip address of
192.168.2.1/24

I would like vrf_customer_A to exchange routes with vrf_HUB but not
vrf_customer_B,
and vrf_customer_B with vrf_Hub but not vrf_customerA.

Basically, each customer vrf can only see the hub, but not each other.
I tried following the guide at
http://www.cisco.com/univercd/cc/td/doc/product/ong/15400/r60docs/r60ethgd/546vrf.htm

i created afew instances of vrf, tried import/export the RDs but my routing
table still only show routes that are "connected" in the vrf only.
I've heard that i require ospf or bgp to exchange routes between vrf (within
the same router).

What is the simplest method to achieve my desired scenario ?