Thanks to the help of a number of people here. I've gotten RewriteMap to work like a charm. My question is about the variables being sent to the processing program. Right now I'm using syntax like the following line ... RewriteMap pdfFile prg:/home/user/getPDF.php .. and I use that program to map file ID's to actual pdf filenames like such ... RewriteCond %{QUERY_STRING} ^pdfId\=(\d+)$ RewriteRule ^/getpdf\.php$ /pdf/${pdfFile:%1}? [R,L,T=application/pdf] .. works great. My question is about sending more then just 1 backreference to the map program. In this case, I'm sending %1. Can I add to that? What if i wanted to also send the HTTP_REFERER, or the REMOTE_HOST? These values would be great since I use the mapping program to log the downloads to a database. Would something like this work? RewriteRule ^/getpdf\.php$ /pdf/${pdfFile:"%1|%{HTTP_REFERER}|%{REMOTE_HOST}"}? [R,L,T=application/pdf] I could just make one long string to be sent, with the values separated by a pipe, where my mapping program could parse through and get each individual value. I'm sure you know what I'm looking for at this point and time, so any feedback on ways to do this would be appreciated. Thanks. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx