I write short stories and novellas, mostly. As for genre, heh, good luck! Almost all my stuff is some weird combination of suspense, fantasy, science-fiction, horror, paranormal, mystery, and thriller. If that's too long, just say I write spec.fic.
As for targets, I don't usually set myself any. I try to write every day, but if it doesn't happen, it doesn't happen (I live on a working cattle ranch, so life/nature interferes sometimes).
As for how much I do write a day, usually it's between 2500 and 5000 words a day. 5k is a really good day, so probably 3500 is about average. Given that, I probably should be writing close to 21k a week (this is assuming I can write every day, whenever I want, and for how long I want), but I probably eek out closer to 10k or 15k.
Considering scenes per week, it varies. Sometimes I'll work on one scene for two weeks straight, if it's not working right; I'll keep tweaking and tweaking and tweaking until I feel that it is. Other weeks, I burn right through five or six, maybe more.
As for how long I write, that, too, depends. Sometimes I'm only able to get in five or ten minutes here and there (makes it difficult to "get into it"), and other days I sit and write for six or seven hours straight, taking breaks only for food and bathroom.