I want to use "post" to submit my sequence automatically to http://www.ncbi.nlm.nih.gov/Structure/cdd/wrpsb.cgi. What kind of URL will I use? what kind of content should I use? $req->content('match=www&errors=0'); Please Help! The code is: 
#!/usr/bin/perl

use LWP::Simple;
use LWP::UserAgent;

$ua = new LWP::UserAgent;
my $req = new HTTP::Request 'POST','http://www.ncbi.nlm.nih.gov/htbin-
+post/Entrez/query?uid=9254694&form=6&db=m&Dopt=r';
$req->content_type('application/x-www-form-urlencoded');
$req->content('match=www&errors=0');

my $res = $ua->request($req);
print $res->as_string,"\n";

[download]
Here is the output: 
HTTP/1.1 200 OK
Connection: close
Date: Tue, 08 Apr 2003 02:33:07 GMT
Via: 1.1 www.ncbi.nih.gov
Server: Apache
Content-Type: text/html
Client-Date: Tue, 08 Apr 2003 02:33:28 GMT
Client-Peer: 130.14.29.110:80
Client-Response-Num: 1
Client-Transfer-Encoding: chunked
Title: Entrez Error
X-Cache: MISS from www.ncbi.nih.gov

<html>
<head>
<TITLE>Entrez Error</TITLE>
</head>
<body>
<HR>
<H1>Error</H1><P>
This link contained an data type unknown to Entrez.
</body>
</html>

[download]
Thanks in advance!

20030408 Edit by Corion: Added second pair of code tags

In reply to how to decide the URL by Anonymous Monk

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