Question:

I was wandering if you had to be baptized, even after saying the prayer of salvation to be completely saved.

Answer:

Just one small problem -- there is no mention of salvation coming through prayer in the Bible. To claim to be saved by saying a prayer, then, is to make up your own way to heaven, something people cannot do. See: Praying a Sinner's Prayer. Saying a prayer won't even make you partly saved.

I have a chart of the things God connects with salvation. See: Things Accompanying Salvation. These are the things God says you must do to be saved and since He is the one granting salvation, they are important to do.