New users should not try to promote goods and services anywhere other than in the Products and Services section. That is the proper place for your posts and both UBB and html will work for you when crafting your post. That means the link to your website will actually work!
Your link will not work in the other forums and your post will be deleted. Members will look upon you and your service as not reputable because you spammed the forum. You may even find yourself banned if you make promotional posts in multiple forums.
Save yourself some grief and get some benefit for your time by making sure you post in the Products and Services Section.