can't intall postgreSQL (vista home premium)

[klas]

hello
i tryed evryting to make it work but every times it stops vhith the same end .

Error message

"Service 'PostgreSQL Database Server 8.3'(pgsql-8.3)
failed to start.verify that you hafe sufficient privileges to
start system services"

i am admin on this computer.
a have disabeld UAC.
closed the firewall even closed antivirus prog.
insalled in a another dir outside program folder.
pleese help me!
i tryed different versions of postgreSQL all whit the same error message.

[kraada]

This error occurs as a result of anti-virus, anti-spyware, or anti-spam software not allowing system services to be installed. Disable these programs and attempt to install again. These issues have been known to happen with IE 8 Beta 2, NOD 32, Norton Antivirus, F-Secure Antivirus, ZoneAlarm and Spampal. Once PostgreSQL has been successfully installed you may reactivate your third-party software.