There should be a config.xml file somewhere along the lines of C:\Program Files\QlikView\Server\QvWebServer. In that file, make sure to set the HttpsPort to 443. I think the default is set to -1.
Also, if you are using Qlikview Server 9, you should make sure that Qlikview is indeed using IIS as its web server. The default is Qlikview's own Web Server, which I'm not sure how exactly to configure it to use SSL certificates.
Once you have that set up, just assign the ssl certificate from versign to Qlikview's web site in the Directory Security tab of the web site's properties.
I'm attaching a document that Qlikview support gave me when I asked them how to set up QVS for IIS. Because I'm using Windows Server 2003 x86 and IIS 6, I edited it more specifically for my setup, but most of the stuff should still hold true. Ignore the blurb at the end about the other files in the folder. This document was part of larger zip file so that's what that refers to.
Give that a try. Again, I haven't tested it on Win Server 2008 x64 or IIS 7 so the settings may be a little different but the general steps should be the same.