minisap 4.6d installation problem

Hi experts,

While iam installing the minisap 4.6d,iam facing the follwoing problem....(i got the CDs from Abap Ojects book)

"Could not find SQL-Server Instance "MSSQLSERVER" on your DB host "admin". You must install SAP into the default instance or into a named instance that has the same name as your SAP system (SID)."

Could any one let me know, where i need make the changes...

Thanks in advance