When looking for an enter button, don't jump on the first one you see.
Most sites try and get you to click on their sponsers by placing text links
that resemble what should be the actual entrance button. To avoid clicking
on any sponsers wave your curser over top the link and look in the window
in the bottom of your browser to see where that link takes you. If it is
the same server as the page you are viewing is on, it's a safe bet that
that is the right one. IE users, I'm not sure where that window is or if it
is even an available option, for the newer versions of netscape I know it is.
Also, if in that window the link is shown to have the letters cgi? in it near
the begining or end, there's a good chance it's a blind link to a sponser.