my dolphin is not working as good as it should be

plz check my site

http://friendszone.isgreat.org/

my other issue that how people can chat with each other means with friend

Not working as good as it should be, is quite an understatement.  You should read the Dolphin technical requirements here:  http://www.boonex.com/trac/dolphin/wiki/DolInstallation

The error message I received when trying to visit you site, has nothing to do with Dolphin.