I bought Tamrac Velocity 5 and I was very happy with it. It fits my camera (D70), 50mm prime and either 70-300 or flash. The picture/drawing at their product page (
http://www.tamrac.com/5745.htm) is reasonably accurate/realistic. I liked the option of using it as a hip pack.
Unfortunately, I've outgrown the bag within a few short weeks and I now use Slinger, just like Wendy (similar style, just bigger). If you are interested, I'll sell you the Tamrac for $30 + actual shipping (I've really used it a handful of times - PM me if interested). Even if you want to get a new one, I recommend it.
Peter