reverse proxy question

[Al - Image Hosting Services <azick@xxxxxxxxxxxxxxxxxxxx>]

Hi,

I have a reverse proxy setup. It has worked well except now the apache 
server is getting overloaded. I would like to change my load balancing so 
that I send all the dynamic content to one server like php to the apache 
server and all the static content like .gif, .jpg, .html to another 
webserver. Is there a way to do this and where is it documented? Also, 
could someone recommend a light weight server for static content?

Thanks,
Al