Regarding initdb & pg_ctl

Hello Folks,

So I have following problem as I logged in Windows 2003 with
domain\user. I am basically trying to create installer for postgres. So
I need to keep in mind that person who is going to install can be the
one who is currently logged in.

So I tried to change permissions on data directory so that initdb will
run fine. I changed creator owner privileges to be read and execute
using XACLS then ran initdb. It populated directory correctly But when
I used pg_ctl to start up service it failed saying

"FATAL: XX000: C:/Program Files/PostgreSQL/8.4/bin/postgres.exe: could
not locate matching postgres executable

, .\src\backend\postmaster\postmaster.c:1070 ..."

Please provide some inputs how to tackle with this permission issues.
Thanks in advance

Thanks & Regards,

Vikram