AVDPrayer,
The LimeWire program is 100% legal
.
It is legal for you to share your stuff, e.g. your photos, recipes, home movies, that audio file of you singing in the shower. You can also download similar things from other people.
Where you run into trouble is when you violate copyright laws by downloading and or sharing (mostly) movies(DVDs), and music(CDs). Basically anything that you can purchase in a store is protected by copyright laws.
Copyright laws are different in different countries, so it's hard to answer your question completely without knowing where your from.
So to summarize, the LimeWire program
is legal, but how you choose to use it may not be. You should check what your local laws are before using LimeWire.