Hi, I am new here, sorry this question has been asked before but i have searched for this kind of questions but couldn't find any answers. I am trying to install QC standard evaluation version on my system which has TD 8.0 sp2 with sql server 2000 database. when i am trying install qc its going up to database configuation and its asking for database administrator user name and database administrator password but we don't know which database it is refering to, whether its sql server 2000 or any other database. could you please let us know which username and password we should use there? one more doubt is can we have TD 8.0 and QC standard edition on the same machine or should i uninstall TD 8.0 and install QC. i have windows xp professional on my pc. Thanks in advance.