Instalar el minisap,dudas con el sqlserver

[Jacobo]

Hola estoy instalando el minisap en el ordenador y tengo los siguientes errores con el sqlserver,anteriormente me decia que pusiera la ip y el host en etc/hosts y lo puse,

el sql server service manager esta en
SERVER:EVARUBIO
Services:MSSQLServer

ahora me da este error

INFO 2007-10-08 16:56:17 CENTRDBINSTANCE_NT_IND SyCheckHostnameLookup:434
checking host name lookup for 'EVARUBIO'

INFO 2007-10-08 16:56:17 CENTRDBINSTANCE_NT_IND SyCheckHostnameLookup:467
offical host name for 'EVARUBIO' is 'EVARUBIO.info93.es'.

INFO 2007-10-08 16:56:17 CENTRDBINSTANCE_NT_IND SyCheckHostnameLookup:535
host 'EVARUBIO' has ip address '172.31.2.3'

INFO 2007-10-08 16:56:17 CENTRDBINSTANCE_NT_IND SyCheckHostnameLookup:575
offical host name for '172.31.2.3' is 'EVARUBIO'.

ERROR 2007-10-08 16:56:20 DBCOMMONDBENV_IND_MSS InternalColdKeyCheck:0
Could not find SQL-Server Instance "MSSQLSERVER" on your DB host
"EVARUBIO". You must install SAP into the default instance or
into a named instance that has the same name as your SAP system
(SID).

ERROR 2007-10-08 16:56:20 DBCOMMONDBENV_IND_MSS InternalColdKeyCheck:0
Please install MS SQL Server before continuing the installation!

ERROR 2007-10-08 16:56:20 DBCOMMONDBENV_IND_MSS ColdKeyCheck:0
Phase failed.

ERROR 2007-10-08 16:56:20 InstController Action:0
Step DBCOMMONDBENV_IND_MSS could not be performed.

ERROR 2007-10-08 16:56:20 Main :0
Installation failed.

ERROR 2007-10-08 16:56:20 Main :0
Installation aborted.

Como tendría que configurar el sqlserver,que tendría que hacer

Gracias