some problems with curl

hi all,
when i am getting some data from apple's reservation site, it returns
nothing but http_code 0 when i display the http code using curl_getinfo
function.what's the problem? i try even every option in the curl-php
documentation and it does't work at all.
the url is:
http://reserve.apple.com/WebObjects/ProductReservation.woa/wa/reserveProduct?lang=zh&country=CN&prelaunch=MC605CH_A

_______________________________________________
http://cool.haxx.se/cgi-bin/mailman/listinfo/curl-and-php