Ok,obviously I can't spell,lol!Anyway I got a used computer last month,went from Windoews ME to Windows XP and for some reason, I can receive my email on Microsoft Outlook ,just can't reply to it. I keep getting a pop up box that says, Microsoft Outlook could not sign or encrypt this message because you have no certificates which can be used to send from this email address. Ugh!!! How do I fix this. In the meantime I'm using my yahoo and hotmail addy.I'm using Internet Explorer if you are wanting to know that. I'm not very computer savvy, so I thought it best to see if any of the pros here can help me through this, thanks in advance!