Google is not working for me

[Galeongirl]

I've no clue what the problem is, but ever since I changed the security settings of my router(had to reset it) google isn't working anymore..... I tried various country versions(.nl, com, gr that kinda stuff) but none work... I just get page cannot be found... the google bar in IE7 isn't working either...
what can be the problem?

I reset my router to gain connection with my DS, had to change WPA to WEP key for security, and after I did I had to reconnect to internet with ip and subnetmask and such, and internet worked... but google hasn't worked since

 

[Galeongirl]

anyone??

there's more, now some sites are suddenly extremely slow (icanhascheezburger for instance) that used to be at normal speed, and I can't see guitar tab sites anymore well, I can see the site but not the tabs...