Linda
if the pictures in your emails are attachments, you click on the lil paper clip on the right top of the open email and a box will come up where you will click "save attachments" and then save them into your Pictures folder in your Documents

if the pics in your email are simply inserts in the emails (ie not attachments) then you just right click on your mouse and then click the "save as" that comes up in the lil box and again save them to your Pictures folder

right clicking on your other stored photos on Picassa should again give you the "save as " option..............

clear as mud??????