Olympus Digital Slrs Great Camera, Great Lenses And Features Galore What Lens Would Be Good For The Olympus E300 DSLR? For Portraits?

What lens would be good for the Olympus E300 DSLR? For portraits? - olympus digital slrs great camera, great lenses and features galore

I am about what lens to buy, confused. I only have expierence with SLR less first.

I have an Olympus E-300 SLR and I asked myself why should I buy? I'm going to portraits, the lens is best for what I do with the camera?

Thanks