Vista Home Premium Installation troubles...

Hello all,

I am [a newbie] trying to install postgres on a machine with a Windows Vista Home Premium OS.  All appears to be going
welluntil the very end when it tellme it cannot create user psostgress & rolls back the installation.  I get the
followingerror message at the end of my intallation my log file: 

MSI (c) (08:30) [18:10:14:095]: Note: 1: 1708
MSI (c) (08:30) [18:10:14:095]: Note: 1: 2205 2:  3: Error
MSI (c) (08:30) [18:10:14:095]: Note: 1: 2228 2:  3: Error 4: SELECT `Message` FROM `Error` WHERE `Error` = 1708
MSI (c) (08:30) [18:10:14:095]: Note: 1: 2205 2:  3: Error
MSI (c) (08:30) [18:10:14:095]: Note: 1: 2228 2:  3: Error 4: SELECT `Message` FROM `Error` WHERE `Error` = 1709
MSI (c) (08:30) [18:10:14:095]: Product: PostgreSQL 8.2 -- Installation failed.

MSI (c) (08:30) [18:10:14:095]: Windows Installer installed the product. Product Name: PostgreSQL 8.2. Product Version:
8.2.Product Language: 1033. Installation success or error status: 1603. 

MSI (c) (08:30) [18:10:14:110]: Grabbed execution mutex.
MSI (c) (08:30) [18:10:14:110]: Cleaning up uninstalled install packages, if any exist
MSI (c) (08:30) [18:10:14:110]: MainEngineThread is returning 1603

Does anyone know what I need to change to make it work?

Thanks in advance,
Holly
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