set a cookie for a form?

Hello I wonder if somebody can help me, I want to set a cookie for the form below, so it remembers a users preference until they change it, even if the browser closes. How can I do this?

<form name="Flags">
<IMG SRC="http://www.srcf.ucam.org/~girtonmcr/images/button/BlueFlag.gif"
 BORDER="0" name="mypicture">
<INPUT TYPE=BUTTON name="flags"VALUE="Flag" onClick="mypicture.src = 'http://www.sprott.com/images/icons/red_flag.gif'">
<INPUT TYPE=BUTTON name="flags"VALUE="Off" onClick="mypicture.src = 'http://www.srcf.ucam.org/~girtonmcr/images/button/BlueFlag.gif'">
</form>

Anyone?

Does anyone answer posts here? please?

Sorry, CodeHunter. That's probably just not the best place for generic web development questions. This is a support forum for a specific commercial product (ActiveWidgets 2.0) and non-related questions usually don't get much attention. I think you will get more response if you post the same stuff on http://www.webmasterworld.com/forum91/ or similar forums.

Ok Thankyou Alex :)