I would say get the D50. You'll get a warranty with the D50, and not with the D100. The D100 can take some great pictures, but there is a steep learning curve with post processing to get the images to where you want them. The D50 images, and especially for someone used to the P&S look like the 5700, will look better right out of the box than the D100. The D50 also has the best noise control of any Nikon DSLR (even according to some D2X owners).
Here's a link where someone asked the same question if you want to dig a bit deeper.
http://forums.dpreview.com/forums/read.asp?forum=1021&message=17616787
--Will
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Here's a link where someone asked the same question if you want to dig a bit deeper.
http://forums.dpreview.com/forums/read.asp?forum=1021&message=17616787
--Will
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