I recently bought a small lot of warhammer models and I need a bit of help identifying them. I'd like to know from which year/edition they roughly are, and, in case of some, exactly what they're meant to be.

http://i.imgur.com/Xq41fMq.png

This I believe is a 4th or 5th edition dark elf general, but I'm not sure.

http://i.imgur.com/i5eADj5.png
http://i.imgur.com/u8etf5W.png

These are three undead, two skeletons and one model riding a skeleton steed. The skeletons came with a shield sprue. I have really no idea what the rider is supposed to be, a wight or something perhaps?

Thanks in advance,
Nerevarine