Not growing up in a reformed church that practiced infant baptism, I, like many evangelicals, viewed it as an unbiblical practice. I know longer think that and as a Presbyterian I fully embrace covenant theology which includes the practice of infant baptism. This post isn't intended to debate the issue, but to provide a few helpful resources for those wanting to learn more about infant baptism.
Third Millenium ministries has a nice 40 minute video overview that does a great job of laying out the biblical support for infant baptism. We watched this in sunday school this morning.
R. Scott Clark has a helpul blog post explaining why we baptize infants that is helpful as well.