Classic Spanish accent is the easiest to understand for us foreigners and to spell what you hear from another person correctly. For instance, in Columbian accent "s", "c" (before "i" or "e") and "z" (before "a", "o" and "u") all sound the same (like "s"), but in Spanish accent you would hear the difference ("c" before "i" or "e" and "z" sound like "th"). So "zorro" or "cine" in Colombian accent sound like "sorro" and "sine", not like "thorro" and "thine" in classic Spanish accent. I think you should stick to Spanish accent for yourself.

Maybe Google Translate could help you ;) (www.translate.google.com) When you write a word, you have an icon in the low right corner that looks like a loudspeaker... If you click on it, a voice pronounce the word for you =) I hope It helps.

Ahhhh... thank you. :) How about "c" before i or e... "s" or "th"...

Although there are many accents of Castillian (Or commonly known as Spanish), there is a standard Spanish ponunciation that can be spoken throughout all the Spanish-speaking world. Just like with standard American English, standard Mexican Spanish is the one with the least "accent" of all the Spanish "dialects". However, people trying to sound "cool" forget the basic and best parts of the language, example: "How are you? = Como estas/Como esta Usted?", turned into "What's up?/ Que onda?". Now, for your question about "ll" the best way is to say "y". Castillo = Kasteeyo