form action

Hi first time using wordpress as CMS as opposed to static html/css sites and 3rd party cms.

Simple question hopefully with simple fix.

I’ve got a popup “newsletter signup form” coded into my header. here’s the code:

<form id="quickform" name="title" action="newsletter.php" method="GET" >
Enter Email Address <br/><input id="box1" type="text" name="user" />
<input type="submit" value="Submit" />
</form>

problem is no matter what config of the “action” field I’ve tried I always get a 404 search result. I’m assuming its a path problem to the newsletter.php file stored within my theme folder.

Any help on what the path to the file should be would be really helpful.

thanks in advance.

Greg