Instalation in win 2000

[Alejandro Michelin Salomon \( Adinet \)]

I install the sap db server in my computer, from this package :   sapdb-server-win-32bit-i386-7_3_0_29.zip   The instalation create two services :   XSERVER _CTEMPSA --> What is this service ?     The instalation create a db instance or i need to create a instance ?   The sap db server has a dba user for the entired server or each database has own dba user ?   Do you can help my ?   Alejandro Michelin Salomon