I guess I'll throw my VERY limited opinion in on this.
I was facing the same situation you're in right now, up until today. (Yes, I bought my first DSLR This MORNING!)
I spent about 6 weeks researching, asking questions both at work and on this forum.
The opinions about either Nikon or Canon, IMO, are true.
I've been an avid Canon user for Video for years. However, I stepped into the world of Nikon this morning.
I picked up a Nikon D40, because all I want is something to take nice pictures, but be able to actually control the camera as well.
From what I've learned, what everyone else is saying is true. The glass you throw in front of the body is just as, if not more important than the glass itself.
I can say now from the 3-4 hours I've been playing with my rig, and the time I spent with a buddies D60, that I'm 100% thrilled with my purchase.
My personal recomendation would be, like someone else said, start with something lower end. A D40 or D60 (Or Canon Equivelant), throw some nice glass in front of it, and play around for a while. Make sure it's something you're going to stick with before dumping a ton of money into a bunch of stuff you won't use.
One thing I can warn you about, if you're shopping online, be wary of the "kits" people are selling. They'll throw in a bunch of stuff, make it look like "Hey! There's a TON of stuff here" but what you end up with is paying for a bunch of stuff you'll never use. Also, the lenses in these kits can be lower end as well.
If you're set on a "kit", go to a professional shop or reputable online source.
Personally, I went to Calumet. They have a shop here in Hollywood. A WONDERFUL woman named Christy took the time to answer my questions, be patient with me, (Unlike Samys) and put together a kit for me that covered ALL the bases to get me started without raking me over the coals.
I bought a Nikon D40, 18-55 Lens, Bag, SB400 Flash, 4Gb Sandisk Card, Rechargable batteries and charger for the flash, UV and Polarizer filter, Cleaning kit, and a Photoshop basics for photo editing DVD (Not sure how much help it'll be, but she threw it in anyway... They sell em for $32.99) Out the door was just under $700. Samys was going to charge close to $650 for the body, lense, and a bag.
Anyways, that's my 2 cents.