This question has been asked before.
Some said that it's not possible to speak a foreign language without an accent.
Some said that it's not possible to become totally fluent.
Some said that you can speak a foreign language, with natural flaws, and that native speakers would be left wondering what other Spanish-speaking country you're from.
If you learn to pronounce things correctly, you are in essence speaking without an accent. I'll let you in on a secret. Every textbook and web site I've seen convinces the beginning student that most of the Spanish consonants and vowels have American English equivalents. This is mostly false. Almost all Spanish consonants and all the vowels are pronounced differently than the so-called American English equivalents. So, as I said before, if you learn to pronounce things correctly, you are speaking without an accent. If you choose not to learn a different sound for almost every letter, you will forever have an accent.
That said, everyone I know is intrigued by an accent.
