I really need help with my Wii and the remotes... They wont sync...?

I was playing it the last week with no problems what so ever... I packed it up and brought it over to my uncles house so my nieces and cousins could play and when I went to set it up the remotes weren't working at all. I put new batteries in both and that didn't do anything so I tried to sync both of them and the four blue lights just kept flashing on BOTH!!! I did everything they say to do, I unplugged the Wii, took the batteries out of the remotes, waited a while, tried everything again and I still got nothing. I gave up on it then and decided to just unhook the whole thing and I figured I'd give it a little while and try again when I got home... Well, I gave it 4 days and I just got Guitar Hero and I really want to play my Wii... I tried everything again, all new batteries, tried syncing the remotes and it's still not doing anything except the four lights flashing when I push any buttons, I'm getting really irritated with it now, can anyone help me???