Hi Karina, welcome to Segamat.com!
Sorry about the lack of instructions. Maybe you can help out by writing the steps you took to post....
I'll start instructions here.. tell me if this is what you did.
Basically you have to be registered to post in the forum. To register, click on the register icon in the login section. ( this may not be clear enough). You must enter a valid email address. You will then receive an email with a confirmation link. Once you click on this confirmation link, you can post to this forum.
Anyway Karina, maybe you can tell us a little bit about your background...