Everytime i try to get my PS3 on the internet it says this is a dns error 80710102 what is wrong. can you help?

There are several possible root causes for this error but ultimately the PS3 is losing connection and is unable to reconnect. Some possible solutions include disabling the media server on the PS3, configuring static DNS addresses on both your router and your PS3, updating your router firmware, or moving your PS3 to the DMZ.