we did that for a while but it required a lot of work from the webmaster. MAybe there is a better way now but I am not sure. I like the suggestion though
maybe Lee or eric can have a look at http://www.vbulletin.org/forum/showthread.php?t=80825
"All right, but apart from the sanitation, the medicine, education, wine, public order, irrigation, roads, a fresh water system, and public health, what have the Romans ever done for us?"