He's not a very strong reader for his age. I don't want the books to discourage him, but at the same time I don't want them to be too "babyish." Any suggestions?

Thanks!

There are leveled Star Wars Books by   DK Readers (Leveled).  I have several in my classroom for second graders who love Star Wars.

These are a few of the titles:

Star Wars" Journey Through Space (DK Readers Level 2)

R2-D2 and Friends

Luke Skywalker's Amazing Story

There was a series that came out years ago that my brother enjoyed, though I don't know what reading level they would be at.  It says ages 9-12 on Amazon, but I doubt they are for 9 year olds because at that time my brother was no where near reading at the level of a 9 year old, so they might be OK for someone who's 7 year old.

http://en.wikipedia.org/wiki/Jedi_Prince

What's nice about that series is that each book builds upon the other, they aren't standalones; however, the series isn't really connected at all to the other SW books for adults.  Still, I remember it being a good read for kids.  Now this makes me want to find those books to flip through them!  I probably have them somewhere upstairs because I ended up taking a lot of books that my mom was getting rid of in hopes of one day going through them and posting them on PBS (and as a SW fan, I wanted to read through them one more time (I read them too when I was younger, but they were below my reading level since I'm older than my brother so I found them to be a very easy, fast read), post a review, then let them go but I haven't gotten that far yet, lol.

My son is 7 and also loves the DK Star Wars books.  He can't read many of them on his own yet, but he still likes to look through them and he can identify a lot of the words because he is so familiar with the Star Wars story/characters.

He also found some Star Wars comic books at the library and has enjoyed looking through/reading those this summer. 

One of his favorite books to look at is Lego Star Wars: The Visual Dictionary http://www.amazon.com/LEGO-Star-Wars-Visual-Dictionary/dp/0756655293/ref=sr_1_1?s=books&ie=UTF8&qid=1281638621&sr=1-1  Again, he is not reading a ton in it, but he can literally look through it for an hour or more and he is generally pretty active.

I have a few books from the Star Wars journal series on my shelf.  They tie in very closely to the movies.  I'm not sure whether they would be ideal fo a seven year old, but you can look on my shelf and I would be happy to send all the Star Wars books I have for one credit as they are small and don't weigh very much.