Dunjini has some modern textures/maps also. I haven't picked up the software yet, so I don't know how much, but I've seen a few maps people made for SR with the program, and it seemed to work.
I'll second googling "floor plans", as I just went through and got a bunch of hospital and asylum maps that way.
Critical Locations is a good book, raun a mission using the "acrtic research facility" map out of there just the other day.