Installed SQL Server 2008 R2 Express ADV SP1 (with advanced services), but installed 2005 Express

My English - bad =)
Download SQL Server 2008 R2 Express ADV SP1 from
http://www.microsoft.com/en-us/download/details.aspx?id=26729
this
SQLEXPRADV_x64_ENU.exe
Installed, opened Management Studio,made the request
print @@version
result:
Microsoft SQL Server 2005 - 9.00.3042.00 (Intel X86) 
Feb  9 2007 22:47:07 
Copyright (c) 1988-2005 Microsoft Corporation
Express Edition on Windows NT 6.1 (Build 7600: )

How to install the 2008 R2 Express ADV?? =)I can't open the database version 661, because SQL Server 2005 - 612