Having probelm on installing Joomla in plesk 8.3 panel.. please help me

I had bought hosting package of windows, which has plesk 8.5 panel.. i am confused of installing the joomla package. please tell me for what folders all i have give permission and how.. and please tell me the settings how to be used in plesk panel about vitrual folder and more..

here is the details of option i got in my panel

Prevent users from working with the control panel until interface screens are completely loaded, what i have to keep this checked and please till me the following also..which one i have to select in the following option

Script source access
Read permission
Write permission
Directory browsing
Log visits
Execute
Allow to use parent paths
Allow application execution in MTA (multi-threaded apartment) mode
Allow anonymous access
Require SSL

Defined by IIS (4096 KB)
Defined by IIS (200 KB)
Enable ASP server-side script debugging Defined by IIS
Enable ASP client-side script debugging Defined by IIS

Group or user names
Administrators
FTP accounts (ftp_subaccounts)
Plesk IIS User (IUSR_domain.com)
Plesk IIS WP User (IWAM_plesk(default))
Plesk FTP User (domain)
Plesk Domain User (domain.com)
SYSTEM

Permissions for Administrators Allow Deny
Full Control
Modify
Read & Execute
List Folder Contents
Read
Write


and which folders all i have to give permission and for which users to install joomla..

there is two options
Allow inheritable permissions from the parent to propagate to this object and all child objects. Include these with entries explicitly defined here.
Replace permission entries on all child objects with entries shown here that apply to child objects.

while giving permission which one i have to select..

please i am struggling.. when ever i do it were showing some problem

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