For example if you have a link like:
http://freerepublic.com/focus/chat/3840032/posts?page=731#731 you'd just want to use that as the attribute and then provide some text in between the tags. This is how you'd do it:
<a href=http://freerepublic.com/focus/chat/3840032/posts?page=731#731 target=_new>See my post here.</a>
This would render as:
See my post here.
The target (target=_new) attribute is telling the browser to open the link in a new tab. This is good practice for discussion boards so the user doesn't lose their place.
Important to note that the only space will be between *a href*.