Ok, I figured as much on the tires.
Yeah, I guess I'd have to switch out all the gears for the back rim to the new one. I have no clue how to tension the spokes, but Youtube is my ally. TO YOUTUBE!
Thanks for the info, I made a BUNCH of adjustments on my bike last night to tune it up and half the time I had no idea what I was doing until I found a video telling me what to do.
As far as bikes, I guess brands would work too. What brands are really good for a semi-budget price? I've heard of Fuji (EXPENSIVE!) and picked one up. It was REALLY light, I almost threw it up in the air cause I was used to carrying mine. lol
But yeah, any good, trusted manufacturers would be helpful as well, and I know there are more than 1 and not everyone will agree, but I'm just looking for input for now and I'll do some searching afterward.