Hi, The first time I install postgresql in Windows XP, I install it as service. The installer asked me to create postgres account. Ok, fine... then someday I uninstalled postgresql so I can install the newer version of postgresql. But first to make it clean, I delete the postgres account from right clicking the My Computer, then click the properties. Choose the advanced tab, then click the user profiles setting buttons. Then when I try to install as service with postgres account, it said : Invalid user name specified: Logon failure: unknown user name or bad password. I try to create postgres account from start menu ---> account or control panel --> user account, it said that The account already exists. But there is no postgres account in User Accounts window. So the questions is: 1. How do I really delete the postgres account that created by postgresql installer??? Thank you. Regards, Akbar ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to majordomo@xxxxxxxxxxxxxx)