To determine the adaptor plug you need see Voltage Valet's Link to the Electricity Guide.
NOTE: Some countries use more than one type of outlet and you should carry the appropriate adaptor for each outlet listed.
Adapter plugs - DO NOT CONVERT ELECTRICITY. They only change the plug configuration to fit the outlet.
You may or may not need a converter or transformer, depending upon the appliance. (Refer to converters for more information).
Grounded and Non-Grounded Adaptor Plugs
Voltage Valet's - Electrical Outlet Guide
Voltage Valet's - Pictures of Foreign Outlets