I think you've gotten great advice here, I just wanted to add that reading *to* children goes on being important forever and ever
and is one great way to make sure that they are getting "content" that is slightly above their current reading level, while building all the positive associations you want with reading for later in life. I agree with other posters that the fact that she doesn't want to sit down and do it herself right now isn't necessarily a problem, and the more you focus on it, the more resistant you may make her.
Comic books, also graphic novels are great suggestions. you just need a good librarian's help!
Try this link re: reluctant readers - it is a bit focused more toward older kids but I think you will find useful tips .http://childrensbooks.about.com/od/reluctantreaders/
A couple of publisher have series for "reluctant readers," and they can be quite good. My son isn't at all "reluctant" and I was at first chagrined at this label when he chose some of these, but when I dipped into them I discovered they were well written.
I somewhat disagree with the frequent advice one hears now that "it doesn't matter what they read as long as they read." I think some kids are being turned off by dreadful reading material. A lot of great stuff is published, but also a lot of crap. I've always told my son that if something is stupid and boring, drop it right away (assuming it is pleasure reading; this won't always work in school!). There is too much *good* stuff to read to waste time on all the stupid stuff.
Finally, remember that what you model is one of the most important influences in the long run, even if you can't see its effects today. You can't make your child be an enthusiastic reader if her talents and interests simply lie elsewhere but you might be surprised at what they are learning from you even when they aren't overtly imitating it. If your whole family reads, and really makes it a priority, she will see that it is really important to you. Some people are just giving it lip service, though - sure there's a shelf of books but they're all stuff from high school or college, or there's Moby Dick and Shakespeare's collected whatever and no one's cracked the spines in years. I think our kids figure out what is important to us.
I also found that buying my kid any book he wanted was counterproductive. Many did get tossed aside unread. If books are important but special, we just don't grab any book. Maybe if you made her earn money to buy books
(just a joke, kind of)