"Action" stripped from signature HTML?

Hi, trying to use a submit form in an Outlook 2003 signature. Basically
something like this:

form name="input" action="html_form_action.asp"
method="get"
input type="text" name="user"
input type="submit" value="Submit"
/form

Entered via FrontPage as signature editor or picking up HTML file. But the
resulting form in Outlook doesn't work, seems that Outlook strips the action
code from the HTML - using the signature results in a mail with this source
code:

html
head
META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"
meta name=Generator content="Microsoft Word 11 (filtered)"
style
!--
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{colorurple;
text-decoration:underline;}
span.EmailStyle17
{font-family:Arial;
color:windowtext;}
@page Section1
{size:595.3pt 841.9pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.Section1
{page:Section1;}
--
/style
/head
body lang=NO-BOK link=blue vlink=purple
div class=Section1
p class=MsoNormalfont size=2 face=Arialspan style='font-size:10.0pt;
font-family:Arial' /span/font/p
p class=MsoNormalfont size=2 face=Arialspan style='font-size:10.0pt;
font-family:Arial' /span/font/p
form method=Get enctype="application/x-www-form-urlencoded"
div
p class=MsoNormalfont size=3 face="Times New Roman"span style='font-size:
12.0pt'INPUT TYPE="TEXT" NAME="user"INPUT TYPE="submit"/span/font/p
p class=MsoNormalfont size=3 face="Times New Roman"span style='font-size:
12.0pt' /span/font/p
/div
/form
/div
/body
/html



Any help appreciated