Chris,
The DR not only signed, they ratified the Kyoto Protocol, effect 02 Feb. 2002. BTW, if you want to know the DR's ratification status for all the major international environment treaties & protocols, you'll find it in a chart form (with all the other Latin American & Caribbean nations) at
http://www.temasactuales.com/assets/...ationchart.pdf
The DR is not an Annex I country, which means very little is required of it in terms of concrete measures to cut its own greenhouse gas (GHG) emissions. Where the Protocol might affect it more is in participating in one of the "flexibility mechanisms" for implementing the Protocol -- "joint implementation", "clean development mechanism" and emissions trading. In a nutshell, these mechanisms allow a developed nation listed in Annex I, such as the US or a European nation, to reduce the GHG cuts they have to make at home by investing in measures abroad. In order to participate in such mechanisms, a developing country had to first ratify the Protocol. For more info on these mechanisms, check out the following link:
http://unfccc.int/kyoto_mechanisms/items/1673.php
Mexico is already selling so-called "carbon credits," and Brazil and Uruguay are right behind them.
Hope this helps.
Best Regards,
Keith