Thank you all so much for your input! Your willingness to answer even the most basic photography questions with so much detail is a huge comfort to me right now!

I just came back from the shop where I purchased my camera and lens. They talked to me about red eye and how to cut down on it (something, I'm embarassed to say, I didn't think about). They showed me what they thought would be the ideal set-up, considering my ability and the fact that I'll be taking wedding pics in a low-light situation. I was hoping to get some feedback from someone that isn't trying to sell me stuff. Here's what they suggested:

Nikkon AFD lens, 28/105, f3.5-4.5, w/macro switch (which I was excited about, because I love close-up shots in nature). The lens is used, $225.00.

Nikkon SB 28 Flash, including cord so that I can use a flash bracket. The flash is used, $110.00. The flash bracket is new, $60.00.

I'm still concerned about the speed of the lens for the wedding. I may not get a chance to check out the lighting at the sight until the rehearsal dinner, and by then it will be too late to make adjustments to my equipment. The salesguy made it seem like with this set-up, I can basically put everything on program and point and shoot. I'm also concerned about how well I'll be able to control the set-up. I didn't handle the camera/bracket/flash set-up in the store, so I have no idea what it feels like. It just looks awkward.

Thank you again for any and all input you can give me!