Really don't need to use the CD at all, it's main purpose it to help you get the router going if you never ever done anything like that before. Think of the CD has Mr Virtual Network Tech. Now if you forgot the password, and boy how I stress users to write that down and lock it in box or somewhere safe. Make sure power is to the router, and press the reset button for 30 seconds to 60 seconds. Then unplug the power and do it again with out power press the reset button for 30 seconds to 60 seconds.

Now after all that wait 30 seconds more.. Plugin the power and give it a try now...