Can you tell me how to post images in full size not "attached thumnail"
Not a problem. There are a few nice things about using the attachment method which you used instead of showing the full-sized image in the thread. First, it gives a dark background for the photo, which sometimes works better than the light background of the forum. Second, it eliminates other distracting forum elements from view. Third, it presents just one photo at a time while allowing you to easily browse to the next if there are multiple images attached.
The adapted lens I use most is the 50mm f/1.5 CV Nokton. It's very sharp, and its reasonably compact size makes it a good match for the G1. This lens plus the 20/1.7 Panasonic fit nicely in a small belt bag and make a good documentary-shooting outfit for me (although eventually I'd love to see a µ4/3-native autofocus lens of similar size and specs.)