If the 1999 movie is the one I think you're talking about (too lazy to look it up :) ) then it's not the same case, at all. In the 1999 movie, it's about two boys switched at birth and it was discovered when they were 2. It's pretty good, it was on a few nights ago.
[I just realized that this is over two years old. Oops!]
There have been two other TV movies similar to this. One was made in 1995 with Lisa Hartman Black and there were two baby boy in this. It is "Someone Else's Child." The other movie was one called "Mistaken Identity" starring Melissa Gilbert and Rosanna Arquette. This movie also were 2 baby boys. I have copies of both movies. Both are very interesting and I watch them often.