how 2 instal the pdm enterprise server

Hi all
Recently my system was crashed because of virus.so i format it.
And i start fresh installation.I done the client,Archive & webserver also.But iam not able 2 install the DATA BASE SERVER .When istart the data base server installation in the 2nd step one windowis coming select the data base in the list, there i am not gettingany list & if i enter the data base serve manually then also itnot accepting.And what is the password for the USER "SA"
Hope i got the reply soon as possible.
thank you.SolidworksSolidworks Pdm enterprise Pdm