These Forums are relatively easy to use and behave much the same as other Forums or online discussions boards. If you are really stuck and can't get going using the information here, email support@encryptec.net for help.
First, on order to post you will need to log in to the web site using a valid user name and password. At the moment, membership is manually validated by Perthes staff so you should email a request to admin@perthes.org.uk or put a call in to Lisa Grant.
Once you have a login id and password, click on "Home", then enter your user name and password on the right hand side of the screen, then click "log in".
Now click on "Forums".
Select the Forum you would like to put a comment on.
Now either select "Add new topic" from the top of the listing, or go to an existing comment an scroll down. In either instance you should see an entry box containing an editor.
Type your message into the box .. you can apply some basic formatting using the toolbar shown at the top of the editor, or you can insert "smileys" by clicking on the little yellow faces below the editor.

(note that these show as :something: in the editor, but will convert to pictures when you click save)
When you're done, click on the "Preview" button, this will let you see what your entry will look like when you actually save it. You may now either continue to edit / correct, or you can click
save to submit your entry to the Forum.
Assuming you can get this far, if you have questions, please post them to the 'General Discussion' forum.