G'day MONKTROOPER,

"<ahref="http://localhost/cgibin/prueba3.cgi"> ..."

You have a typo in your HTML code. The element 'a' and its attribute 'href' need a space between them. Your browser knows nothing of this new-fangled element 'ahref' and so ignores it, hence the lack of a response.

    s/ahref/a href/
[download]

I also notice you have a directory called 'cgibin'. That's usually spelled with a hyphen: 'cgi-bin'. You may want to check your spelling.