You should have a minimum no. of 10 posts i suppose to make your links live. like directly www.digitalpoint.com will be OK after u reach the required no. of posts. http://forums.digitalpoint.com/faq.php?faq=signatures#faq_signature_requirements
Did u read the Rules i gave? Just write any website URL and check whether it comes as live link or not. If yes, u are meeting the requirements or else still u have to increase the no. of posts.
I hope you would be able to post live links now as u have 10 posts and also are an old member(infact older than me )
And if you want to use proper anchor text to spam your links, do so like this: [url=http://www.yourdomain.com/]Your Cool Stuff[/url] It would come out like this: Your Cool Stuff