10 Samples

I want to have 10 sample of web sites on my site. It would use 10 different themes, but I want to same MySql database for all of them.

Can someone point me to any easy way to do this? Such as a central location for one database that points to all 10 of them.

The content will not change so a simple copy of the database would be fine, but I can not get that to work either.