I too don't want to load, learn, or work with any more software than I already have.
I've created sub-directories for JPGS, RW2s, and DNGs. I download the RW2s into their directory, run the DNG converter to point to that directory for its input file source, and point it to the DNG directory for its output. ACR then accesses those DNGs without a hiccup. Pretty simple. The DNGs are large because of the lack of full support for the LX3s code, but its no real hassle. Yes, the workflow would be simpler is ACR could access the RW2s directly, but I've only got one more step in the workflow. I can live with that.