Michelle,
You ask a question that carries a very passionate debate among many Christians today, and that's the gift of tongues. I don't know what denomination you all are at Stand, or if there are many in your group. There has been so much discussion about Spiritual gifts, and the gift of tongues in particular. Some denoms believe that that gift was only temporary, as you referred to in your question. That God gave that gift to His apostles at Pentecost and it was only needed for the people of that day. Others believe that tongues is a vital part of worship for today. Still others will take a stand and go so far as to question one's salvation if they do NOT speak in tongues...
I have belonged to a Southern Baptist body as well as an AOG (Assembly of God). Baptists do not believe that tongues is a necessary gift, nor do they believe that it is for us today. AOG believe otherwise and speak it (both in prayer and as a message received from the Holy Spirit) at most every service.
For me, I have been prayed up and over and on and still have not spoken in tongues. I don't know why that is. I know that I have prayed for it. So the rest is up to God. Some may say that it's a sin issue, that I am somehow prohibiting the gift... Well, it's possible, cos I do slip, but mostly I believe that if this is a gift that God has for me, then someday I will speak. If not, no biggie. I never put Him in a box... He has more for us than we could ever imagine in our own thoughts...I don't want to put a limit on what He has for me...