[Dai]

It does depend to a certain extent on the manufacturer's scripting but I would expect it to do an Admin password routine and also invite you to choose a name/password for your user account(s).

Once it gets through this setup routine at some point it will probably advise that wireless networks are in range and invite you to connect.

You may wish to delay that until you have your security sorted although I guess you'd be safe enough if you just want to download something like Microsoft Security Essentials.