i need help connecting to internet with my wii!!!

[Reeok]

i have a dynamode BR-6004 W-G1 wireless router but when ever i try to connect to the internet with my wii it detects it but then says error code 50100 can anyonehelp me get online?

 

[JT.]

Are there any firewalls which may be blocking your access?

 

[Reeok]

yes but the worst thing is ive lost the password for my router any idas of how to get it back?