Teaching Letter Sounds in Spanish!

I am trying to decide when to start teaching my oldest daughter to read in Spanish. She has learned to read in English. She is at a very beginner level, so I'm trying to decide if I should wait until she is more advanced or just start now. In the meantime, I need to make sure she knows the letter sounds in Spanish. Many of them will be easy to transfer, but the vowels are hard for her to remember. I have found various websites that have game ideas to review letter sounds.

Here are some links:
Cute games to review letter sounds (or names) here at Fischer Price & Scholastic
A song that covers words that start with different letters here
Activities and crafts to go with each letter here

Sometimes thinking of words that start with the different letters takes me a little while, especially thinking of vocabulary that would be good for children.

Does anyone else know of websites that have pictures to go along with letters in Spanish? Any other ideas on games to review?

I have a couple of books and plan on getting a few others to introduce the syllables and easy early readers once we have the letter sounds down. I will keep you updated as we discover what is out there!