mod_expires alternative

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Having moved to a new (Apache) server, it no longer has mod_expires
compiled in so I can't use code like the following in .htaccess to ensure
images are cached for specific periods:

    ExpiresActive On    
    ### Expire .gif's 1 month from when they're accessed
    ExpiresByType image/gif A2592000

I'm just wondering what alternative methods are available.  Lots of
information returned by Google went over my head, but did leave me
wondering whether mod_perl (which is available) may be of some use.
Subtext Whore

  "Where there is a perpetual fast there are very few crumbs
   on the floor." - Henry James, The Aspern Papers (1888)

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