lesmemphis said:

I've been doing tests, and it turns out that my Post does not redirect when not in Internet Explorer. I need to post, because the payment gateway only receives the post and not querystring. Help! Perplexed

Redirecting to POST is bad juju.

 

RFC 2616:

   If the 301 status code is received in response to a request other
   than GET or HEAD, the user agent MUST NOT automatically redirect the
   request unless it can be confirmed by the user, since this might
   change the conditions under which the request was issued.