There's two CV axles (half shafts) coming out of your transmission, one on each side. Where the axles enter the tranny there's a seal that's hammered into place. If it's leaking at the seal, the seal is bad. If you see grease flung everywhere near your CV axle, that means your boots are leaking their grease and you'll need a new axle soon.

I'm not sure about the 3 lines going into the tranny. I'd imagine there's a o ring somewhere on that or maybe they're not clicked into place correctly.