I finally got my pc 5740 card working with the d link dir 450. I
originally had the px 500 pantec card but I saw in the router that it
wasn't listed.
Im curious to see is the px 500 works though because when I had that
card I didnt have the correct information to put in the router. I
finally got a hold of someone at sprint who knew what they were doing.
The wwan username is
youraccountusername@sprintpcs.com, the password is
the last 4 digits of the card id. I didnt know where I could find the
card id so I asked the sprint rep what it was and they told me. Maybe
its on the receipt or something but I have not looked yet. That worked
for me as the password, but she said if that doesn't work then the
password may be the last 4 digits or the account holders social
security number. Leave the server name blank, and the dial number is
#777 which should already be typed in.