wifi randomly stopped working

I was looking at some of the trades on the pkmn diamond wifi trade center last night and it was working fine.  I woke up this morning to check it some more and my ds randomly refuses to connect to my wireless router....  It detects the wifi signal and the wep keys and such are all correct but it just refuses....this makes absolutely no sense seeing as ABSOLUTELY NOTHING changed.  Good, this is so lame. 

I also have a quick question, am I supposed to set the ds's ip address 1 number above my main ip address? (i only have this pc and my ds using the router so by main ip i mean this pc :P )  ty

Arg, typical of modern tech.....I just had to turn my router off and on XD  lol sorry about this thread, feel free to molest it.flclempire

Yeh, turning off the modem usually works for me.