Please Help

[bhv]

hello everybody. i am new to SQL server 2005. whenever i tried to create database through SQL sever Management studio, it asked me:
server type: (here i select Database Engine)
server Name : ( ??????????)
Authentication : (Windows Authentiction is by default, another is SQL server Authentication, which one should i select?????????)...

i don't know what to do with server name . plsssssssssssssss help me

[coco]

"SQL server Authentication" and check the box ....default ....