I reset my wifi password but I don't know the password!!!! HELP?

I have a D-Link G624T wireless router. I wanted to set a password for my wireless , so I followed the instructions I found online. I went to the 192.168.1.1 site and used the wizard. Where it asked for security I chose wpa and it asked for a hex string I gave it a hex code that I found online at Grc.com, now when I try to login it won't accept the hex code I gave earlier. Any help would be appreciated!! And fast!