Magento Disable Guests from writing Product Reviews

go the Catalog section in Magento System Tab and
under "Product Reviews"
set the "Allow Guests to Write Reviews" to No 
and save the config 

"

Magento Order Status

SELECT * FROM  `m_sales_order_status`

Display Products that are Out of Stock in Magento 1.7

by default Magento (Community 1.7.0.2) out of stock display option is not

example 

[General]

my product name : test item

status: enabled

visible: catalog and search

[Inventory]

quantity: 5

but the stock availability: Out of Stock

in the admin panel go to the [System] tab

< Catalog > section

click the ( Inventory ) 

make the Display Out of Stock Products option to Yes

thats it done..

ou also need run the index management and cache management