Utopia's Avenger

Ok can one of you clever brain boxs please help me get my DS online? I wish i could say that I'm rather good with computer but when it comes to wireless internet i'm rather pants. My DS has connected to it and so has everything else wireless but just as the DS is about to connect i get the wi-fi error code 52000, unable to obtain IP adresses and it also mentions DHCP. Whats DHCP please can someone help the psp and wii have connected fine but the DS is being a right pain. Please can some knowledgeable person please give me some advice on what to do.

I've tried nintendowifi.com but no luck there either. PLease help thank you all.

Matt