Translate English Web Site to Spanish (Puerto Rico)

We need someone to translate english web pages into Spanish (geared toward an audience in Puerto Rico). Must be completely bilingual, and preferably Puerto Rican because of unique (and beautiful) idioms. Project will be over the next month, and may become a long term project. Must be proficient and show proof of good grammer and spelling. Translations should be provided in a text document easy for web designer to follow. Bid is intially for up to 5,000 words, but most likely will be less.