Ok, i've done my research......I found the best soccer game to have if you want to play as Trinidad and Tobago and play in a world cup. And the game is...........
World Tour Soccer 2005
I know, I know, you've read the reviews and so on....but I've checked countless sites and read many gamer reviews. I've gathered that World Tour Soccer 2003 is the best version of the game in its series. But since, World Tour Soccer had almost 300+ more teams than World Tour Soccer 2003, it makes up for any small negativities.
I have also heard that World Tour Soccer 2006 is the worst game in its series and that people who have played and loved World Tour Soccer 2005, hated World Tour Soccer 2006.
In conclusion, World Tour Soccer 2005 has the best gameplay and the best selection of players and teams in the entire series and it has the most important thing of all in it........Team TRINIDAD AND TOBAGO!
I have also read that you can qualify for the world cup, play in the world cup and also play in the Gold Cup which really is a added bonus. As for gameplay, apparently the A.I. isn't great, but the Goal Keepers are solid.
Hope this helps! enjoy!