Cisco Routing Issue From Branch Office

Here’s the scenario:

A branch office with a Cisco 1751 router connected to our private frame relay network, branch router at IP 10.0.10.1 (LAN)/192.168.10.2 (WAN).

Corporate office has a Cisco 2620 at 10.0.0.3 (LAN)/192.168.10.1 (WAN for that branch) and a DSL Router at 10.0.0.1 for Internet connections.

There’s a path through the Corporate Cisco to get Internet traffic to 10.0.0.1 when the default gateway is set to 10.0.0.3, but I’d like to be able to have the folks at the branch office use that DSL router for their Internet connections.

Can it be done? If so, how?