actually it is very easy to sign it,
usually i used myetherwallet as a place for signing my eth address.
before signing the message make sure you own your private keys.
go here :
https://www.myetherwallet.com/signmsg.htmlin there you can signing your eth address and also verify it.
not really hard,and i believe you posted in in the right board
Oh shit, I'm so damn fool that didn't even noticed this thing is on myetherwallet.com. But I wonder why this page didn't appear in google while searching.
Anyway, thank you, bookmarked
Will lock this thread since my question was answered already.