Just as a clearer community answer, because I know I've run into this before:
HTC only lets you download from their site if the referrer is developer.htc.com. So you need to use a script which fakes the referrer:
#!/bin/sh
IDIOTS1="http://developer.htc.com"
IDIOTS2="http://member.america.htc.com/download/RomCode/ADP"
wget "--referer=$IDIOTS1" "$IDIOTS2/ota-radio-2_22_19_26I.zip"
wget "--referer=$IDIOTS1" "$IDIOTS2/signed-dream_devphone_userdebug-
img-14721.zip"
wget "--referer=$IDIOTS1" "$IDIOTS2/signed-dream_devphone_userdebug-
ota-14721.zip"
You can replace the links as necessary (all the names still line up, so you can get 1.5, 1.1, etc.)
(Data from here)