ok lady Gwen. follow these steps:
you have leave 2 windows open: you have to leave Camelot window open where you want to post your image for example.
and then you minimize and go photobucket.
there you decide which image you want to post at Camelot.
you then click on that image.
this will display 4 links on the top right.
you left click on the last link. it is the IMG link.
that will automatically copy the link.
you then minimize the photobucket window.
and open the Camelot window where you are already in your thread where you want to post your image.
you then press "Ctrl" and hold while you press "v"
then you simply hit the post button. that will post your large image.