DSLR Advice

I'm thinking about getting an entry-level([ch8804]$600 for everything) DSLR sometime in the near future, and was looking for some advice.
I'm planning on using it for just general use as well as some aviation photography.
I was looking at the Canon Rebel XS, any opinions on that camera?
It looks more economical to get a lens+body deal; I want something I can use at airshows, but I'm not sure the 18-55mm lens that comes with it will be enough for airshows. What is 55mm in levels of multiplication(is there an easy way to convert?). The 4X optical on my point & shoot is not sufficient, but the 16X digital is just about right. Two lenses is probably out of the question because of price.
Thanks
I'm planning on using it for just general use as well as some aviation photography.
I was looking at the Canon Rebel XS, any opinions on that camera?
It looks more economical to get a lens+body deal; I want something I can use at airshows, but I'm not sure the 18-55mm lens that comes with it will be enough for airshows. What is 55mm in levels of multiplication(is there an easy way to convert?). The 4X optical on my point & shoot is not sufficient, but the 16X digital is just about right. Two lenses is probably out of the question because of price.
Thanks
