Equifax is its own Certificate Authority, no relation to Thawte. They had a lenghty promotion at $45. Looks like they've gone up.
You can check your browser by going to their test SSL page at
https://www.equifaxsecure.com/ebusinessid/ssl_demo.html
They say they support the following browsers:
AOL Browser 3.0
AOL Browser 4.0
AOL Browser 5.0
Microsoft Internet Explorer 3.02
(128-bit and majority of 40-bit)
Microsoft Internet Explorer 4.x
Microsoft Internet Explorer 5.x
Netscape Communicator 4.x
Netscape Communicator 6.x
Netscape Navigator 3.x (needs root rollover)
Netscape Navigator 4.x
[Edited by alchiba on 09-14-2000 at 03:41 PM]