How to install Comodo email certificate?

Hi! I just obtained a brand new free email certificate from Comodo, but I can't make Mail see that!
Before Lion I used certificates, but I don't remember how I got Mail to see them.
I tried double clicking on the file, and it installs it correctly under "login / All items", but Mail doesn't seem to be affected. I read on the web that the certificate should be placed under "login / My Certificates", but copy/paste doesn't work!
Is anyone using Comodo or similar certificates with Lion 10.7.2 and Mail.app ?
Cheers!

I can't seem to get this to work either.
I downloaded an email certificate from Comodo. It saved as a .p7s file, which I double-clicked to install into keychain.
In keychain, I have an apple certificate with a private key for my apple ID, which is the same gmail address as the address I used for the comodo certificate.
However, there appear to be two separate certificates from comodo: one named for my gmail address, and one named "COMODO Client Authentication and Secure Email CA". These show up under "Certificates" but not under "My Certificates"...
When I launch Mail and check for TLS certificates in account preferences, I only see the apple ID one listed, not any of the ones from comodo...
Any idea what's going on here?
Thanks,
Trevor

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How to install and use certificates on client?

Hello everyone, and first of all sorry for my poor, italian-accented english.
I have some questions about SSL and certificates. I'm developing a java desktop application, which should connect to a https server, authenticate with a previously downloaded certificate and then gain access. Some specs: I work on a Windows Xp Pro machine with Netbeans 6.1 and jdk 1.6.0_07.
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After banging my head on my keyboard for a lot of hours, I've got it!
I was trying to install a *.pfx certificate, and that was bad. I tried to convert it in *.p12 or *.cer but that workaround didn't work. Finally I've found a small code to use a *.pfx certificate without installing it and... it works! No more 403 errors now, I can get that damn page. :)
Here is the class I've used (I've found it somewhere googling around but I've lost the link, sorry. Anyway, I've modified it a little)
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.net.*;
import java.security.KeyStore;
import javax.net.*;
import javax.net.ssl.*;
public class ConnectWithPfx {
   static final int HTTPS_PORT = 443;
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      SocketFactory factory = SSLSocketFactory.getDefault();
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<?xml version="1.0"?>
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<a href="der5.cer">Download a CA Cert5</a>
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<a href="der7.cer">Download a CA Cert7</a>
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Message Edited by andyhardie on 15-Jul-2009 04:05 PM

I have nokia 6300 s40v3 and when I tried to open cert.html it showed format unknown.
What should I do. Can you tell me the format of bookmark so that can rename it to cer.(format)
sir please give some guidense its very urgent
reply at *******
MODERATOR'S NOTE:
Personal details removed by a moderator. We kindly ask you not to share your personal e-mail address or any other personal information publicly on this forum. This is for your personal safety and privacy.
Message edited by Aikin19

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Message Edited by sanjaymehta on 06-Aug-2009 09:22 PM
Message Edited by sanjaymehta on 06-Aug-2009 09:23 PM
Sanjay Mehta
Motorola "Brickphone" circa 1996, Alcatel One Touch, Ericsson R380, Sony Ericsson T220, Sony Ericsson T630, Nokia E50, Nokia E61i, Nokia 9300i, Nokia E71,Nokia X6, Google Nexus S, iPhone 4S

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