Salam Mr Zahid
Thanks for your reply. I done everything but I think I am using Window Xp and when I connect to other PC it is use guest account not user account may be this is the problem if you know any thing about it please help me. Also I am setting in Local Security Setting of Server Pc

Properties Group
1, Access this computer from the network Administrators,SQLServerClint
2, Deny access this computer from the network SUPPORT_388945a0
3, I WAS ALSO DISABLED THE GUEST ACCOUNT


Sorry for late reply

Thanks