About the SharePoint !New icon
How long does the “New” image appear next to new list items?
2 days is the default
How do I change the number of days that the “New” icon is displayed?
This value can be changed per web application through the stsadm tool.
stsadm -o setproperty -propertyname days-to-show-new-icon -propertyvalue <Number of days> [-url <http://servername>]
You can use -pn instead of -propertyname and -pv instead of -propertyvalue
To set the number of days to 7 days you would use the following:
stsadm -o setproperty -pn days-to-show-new-icon -pv 7 -url http://servername
How do I check the number of days that the “New” icon is currently set to display?
This can also be checked through the stsadm tool.
stsadm -o getproperty -pn days-to-show-new-icon -url http://servername