IE 6 defaults to wrong email client

I use both IE 6 and Netscape 7.2, but I also still have Netscape 4.8 (with Communicator) on my computer. When I'm in IE 6 and there's a mailto: link on a website, if I click on it I will automatically be directed to Communicator in NS 4.8, rather than to the NS 7.02 Mail compose screen, even though I've identified NS 7.2 Mail as the email program IE uses. How can I get IE to send me to NS 7.2 Mail?

Bob

 

Yes, as I tried to indicate in the initial post, IE is set up to use NS 7.2 Mail--but it still defaults to the earlier Communicator.

 

Here is where I figured out what to do:
http://www.mvps.org/sramesh2k/MailtoProtocol.htm
The steps were:
* Open Internet Options, Programs tab
* From the E-mail dropdown list, choose another mail client and press Apply
* Re-do the procedure and set your preferred email client again