System Copy with backup/restore on SQL

Hi Gurus,

I have one doubt on Homogeneous System Copy.

Requirement is: Need to build test system with Prd data( every thing is same i.e. SID, System no but hostname and ip different)

Prd system details: SAP ECC 6.0 EHP5 database : Sql server 2005 OS: windows 2003.

i want go with backup/restore method( because i have full backup of Prd)

Here am planning to perform steps:

1. Unistallation present test system (because present i have ecc 6.0 installed on this server)

2.install sqlserver 2005

3.install SAP with homogeneous system copy (do we get option to select backup here) not clear on this?

Thanks in advance