LOL no problem ...
Please have a look at
http://www.courselab.com/db/cle/91A6D06CB7D4664AC325769E00453813/main_id/DEB1AE8A7B1B3576C3256FCF0055974C/extended/1/sid//did//forum.html
and
http://www.courselab.com/db/cle/F7715CCB2156BE8FC32577C0002268A4/main_id/DEB1AE8A7B1B3576C3256FCF0055974C/extended/1/sid//did//forum.html
If you have questions left, don't hesitate