To be clear you will need to have a rooted phone with superuser access. I will not describe the process here as it can be found on several discussion boards and blogs.
1st Get Market Enabler from
market-enabler - Project Hosting on Google Code
Install it on your "ROOTED" Android Phone.

From the Home screen Enter Programs menu

Launch Market Enabler Application

tap Settings List to see list of providers to fake

tap and hold any provider i selected [us]T-Mobile
Voila Market for your Phone .. with paid applications
Enjoy