I've had troubles in the past, when it came to Forum posting. I could only readl. Here's the advice Dave offered (not word for word).

1 - You need to create a user Name and password.
Most computers will ask if you want it remembered, click yes.
Also it helps if you do not remove Daves Computer Tips from your cookies.
The two computers will recognise (shake hands) and you're no stranger.

2 - Then you will need to login. You're user name and password should be shown.
(password replaced with *)

3 - Press the login button again at the bottom.

You should be able to post on the Forum.

Hope this helps, Mindblower!