WIFI unable to connect to internet

Hello,

Just purchased a wireless USB connector for WII, loaded using disk provided, everything going hunky dorey! the signal strength was high (brill i'm thinking) then failed to connect and said to try again later (all this last night) trying again today and signal strength low? have tried umpteen times and keep getting msg saying Error Code 51342 unable to connect to internet. Choose internet settings and then confirm your connection. Visit support.nintendo.com for assistance - I have visited and says that error code not found!! I didn't make it up - honestly! Thought I'd ring helpline but only open til 7.00 - bloody hell!