InfoPath Dev

I published a form in a Shared folder. When I tried to access the form it give me an error that the form don't have access to the resources of the computer because it's no Fully Trusted.

I read about it and found out that I have to Sign my Template for the form to be fully trusted. So I went to Tools->Form Options-> Security. Checked the Full Trust option. Cheked the Sign this Form. But when I click on Select Certificate, there are no certificate to select.

The company give us, all users, Digital Certificates. I verified mine on IE-> Option-> Content-> Certificate and it appears on the Personal tab. But it doesn't appears in Trusted Root Certification Authorities. Wich I think it should.

So, the questions are, how can I select my Certificate from Infopath to sign the template? Does it has to be on the Trusted Root Certification Authorities? If so, how I can I exported? Or is there a "work around" this issue?

Any help will be appreciated!

Before clicking "Select Certificate" button, click "Create certificate"

http://office.microsoft.com/en-ca/assistance/HP010967151033.aspx

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odc_ip2003_ta/html/ODC_INFDigitallySigningData1.asp

The Create button only works for a testing certificate. I need to select my Certificate so I can sign the template and make it Fully Trusted.