As for where to look, I'm not too sure of where in Roseville but anything "newer" you will be just fine. When I first moved here I lived at an apartment complex off of Sunset in "Old Rocklin" (meaning like 15 yrs or older LOL) and it was really nice and under 1,000 a month. It was in a little neighborhood of of the main Sunset Blvd.
You will have a very good choice of 2 bedroom apartments in that price range. 2B's range from $750 to about $1200.
There is a huge apartment catalogue available at most supermarkets in town called "For Rent" I have included a link to their online version. Welcome to Placer County !