Please help me to choose.

Nikon D-40X + 18-55 lense, or Sony Alpha A-100 + 18-70 lense.
Almost the same price.
Thank you!

I'd go with the Sony simply because of the Super Steady Shot image stabilization. That will give you more usable photos than you'll get with the Nikon and kit lens. I am also not a fan of that particular Nikon lens. I think the Sony kit lens is better.

Not to confuse you too much, but I would go with the Nikon. But, I have no experience with the Sony.

Nikon's 18-55 lens is now available in a VR version.

I'm a Nikon guy but that's besides the point.