Multiple server certificates

Can anybody help with the following problem?

I have an IIS web server and I would like to use different SSL certificates depending on the page/web service that is being called.

As an example the server has the following endpoints

1) http://1.2.3.4/Pages/Page1.aspx
2) http://1.2.3.4/WebServices/service1.asmx

I need to use a different certificate for endpoints 1 & 2

Is this possible?

One thing that may or may not be relevant is that there is no DNS involved in this, remote clients will always use the IP address for http calls.

After some hunting around I may have found a solution, could anybody confirm my train of thought on this one.

I think I may be able to solve this using different ports for the connection. If I create 2 sites in IIS manager one for pages and the other for webservices. Run pages off 443 and webservices off 444 I can assign different certificates to each site.