Hello, Karen, yes, of course, use what you want. I think I am just about up-to-date on my tribal pages site. http://www1.tribalpages.com/tribe/browse?userid=haulfryn&...
Also, I have entered some on Genes Reunited. I'm afraid I don't have a gedcom you can import (though I think Genes Reunited lets you make a direct link).
All the information on the Hammills I have so far is from the Gwinear BTs and Peter's Cornwall site, so I probably don't have much you don't have already. One interesting thing is that the Hammills and the Andrewarthas inter-married 3 times so far as I know. Several Andrewartha branches went to Australia. I was interested to access the Huguenot records, to see which area of France I should concentrate on. I havnt got a specific site in France to check, I'll try googling until I find more.