1- when i create user name in whs 2011, then i cannot create same user name in dasboard and same when i create user name in dashboard then i can not create in whs.
2- user name created in whs cannot login to windows launch pad, it give error "user name or password is wrong."
3- user name created through dashboard can login to windows launchpad.
some user name created in whs i want to add in dashboard user names too, how can i do this?
You shouldn't use the Windows Home Server desktop, I'm afraid. Instead, you should use the Dashboard for everything.
As for the users you created outside of the Dashboard, delete them and recreate them using the Dashboard.
I'm not on the WHS team, I just post a lot. :)