hey can someone help plz temme this....how do i continue writing an SMS after my 160 characters are over... do i have to just type it in another message or can i continue in the same message....

another thing i wanted to ask is that i wanted to know how do u lock this phone...i mean password protect like say the messages folder or maybe the media files....is there any software for this????

plz help me as i am clueless.... help appreciated...