Domain Mapping, SSL and Dedicated IP

Hi, Hope you can help.

I have WordPress Multisite installed with your Domain Mapping Plugin. I purchased an SSL Cert. so that I could acquire a Dedicated IP. I have successfully mapped other domains to the main site.

That all works great. But only the main site has an SSL Cert. and the subsites do not and therefore show a warning message when viewed. Is there a solution?

I should also point out that having an SSL Cert. is not crucial to this network of sites. I only bought it to acquire the Dedicated IP

Cheers. Steve