If tongues are necessary for salvation then how do you explain John, chapter 20, when a resurrected Jesus breathed on the disciples and said "Recieve ye the Holy Spirit"? It's obvious to me, and most bible scholars would agree, that this event was the moment of salvation for the disciples, when their faith became solidified and unshakable.
Also, if tongues are necessary for salvation, how would you explain the following passage of scripture:
The answer to Paul's question is an obvious "NO".
Now please understand, I am not debating whether or not the Spiritual gifts are for for today. I'm not debating whether or not one should seek to speak in tongues. However, to suggest that one can't be saved without speaking in tongues is unscriptural in my opinion.