Cache problem in Apache

How do I cache Images in Apache 2.0

[anshul81]

I have Apache 2.0 up and running and I want to use it as an Image server. i am redirecting all the image requests to this server.

I want to cache the images. How do i go about doing this? There are some modules with apache 2.0 like mod_file_cache, mod_disk_cache etc. but after going thru their details i am still not clear as to what exactly has to be added to the httpd.conf