How to Assign DNS servers for Different Domains?

Hello All,

I have MAC OS X 10.8.2.

How do i have Different DNS server resolving depending on the domain i want to resolve.?

Requirement:

1. For all the domains in Internet, i want to use 8.8.8.8 DNS server to look up.

2. For my service provider website, i want to use his DNS server to look up which is like 202.54.12.36. For only this website, I want use the DNS provided by DNS & for other queries i want to use open dns by google.

How do i acheive this?

Regards.

Vinay