wine users - Aug 2010 - How do I update "Trusted Root Certification Authorities"

I need to install "UTN-USERFirst-Object for Code-signing"
https://support.comodo.com/index.php?_m=downloads&_a=viewdownload&downloaditemid=79

It's a bit of a hassle right now.  Here's what I did:

First, download the file UTN-USERFirst-Object.crt file from the URL you
provided.

Then, install ie6 with winetricks:
$ wget 'http://kegel.com/wine/winetricks'
$ sh winetricks ie6

Then open the Internet Explorer control panel:
$ wine control

These next instructions assume you're using English, you'll have to
choose appropriate controls in your own locale if you're not.

Double-click on the "Internet Options" icon, then the
"Content" tab, then on the "Certificate..." button.  This
will bring up a kinda complicated dialog box.  Click on "Import..." to
open the Certificate Import Wizard.

Click "Next".

Click "Browse...", then open the UTN-USERFirst-Object.crt file you
downloaded in the first step.  Click "Next".

Select "Automatically select certificate store" and click
"Next".

Click "Finish".

At this point, a "The import was successful." dialog should appear. 
Click "OK".  This will return you to the complicated
"Certificates" dialog.

To verify it was imported successfully, click on the "Trusted Root
Certification Authorities" tab, and scroll through the list.  The
UTN-USERFirst-Object certificate should now be in the list.

Hope that helps!