Someone use my server's contents illigally.

Hereunder is my linux box's apache logs.

I want to block "mystylecity.xx.org" not to use my contents
"/event/bi-n2n.jpg".

How to configure httpd.conf?

-----
218.38.175.136 - - [28/Sep/2005:13:27:52 +0900] "GET /event/bi-n2n.jpg
HTTP/1.1" 200 220879
"http://mystylecity.xx.org/mall/good.php?mode=view&code=07-03&no=69"
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR
1.1.4322)"
218.38.175.136 - - [28/Sep/2005:13:27:52 +0900] "GET
/event/b28_550_2.jpg HTTP/1.1" 200 281116
"http://mystylecity.xx.org/mall/good.php?mode=view&code=07-03&no=69"
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR
1.1.4322)"

Best regards.