Many thanks Pat,
I got my D3100 about a month ago (my first DSLR) and have been learning every time I pick it up. For this shot I tried in Manual, but just couldn't get the whitebalance right. Resorted to Aperture priority with F-stop 11, ISO200 and let the exposure time sort out the fact I had so much light on the 1st capture (left part of the pic). As a result the exposure time is 1/2500 on the left, 1/2000 in the middle and 1/1250 on the right. I used Microsoft ICE to stitch the pics and am really pleased with the blends. Great challenge, as I would never have tried this otherwise.