Go to the T-mobile webpage, all their phones will work. Any T-Mobile phone will work with your SIM card.
Any phone that take a SIM card will be able to be used with your T-Mobile SIM but singular if it has been unlocked, and adjectives features will not function fully and/or properly, such as TZones.
The only way your plan would not work on the phone would be if it be one that requires a data plan, such as the Blackberry, Sidekick or G1 which requires an additional levy for the service.