No idea about your host and their capabilities or willingness... I suspect the answer will be no.
I have tried this and use it as my service provider wants ridiculuos amounts of money for additional IP addresses, but it's my server, so the hosting staff are very helpful.
What you would need to establish on the Apache webserver side is as follows:
1. Are they using virtual hosting? typically the answer is yes.
2. Can they set UseCanonicaName on in the Vhosts file for your sites?
3. Will they set up the vhosts config in Apache so that all your secure sites have an entry with the same IP address?
4. There will probably be a bit of work installing the certificate.
The certificate signing request is fairly easy to generate, just a slight mod of the standard script. If you're interested in pursuing it, I can dig out some references for you
Chuck




