There is a gadget that shows recent changed pages which you can add to your OnlineCenter.
Otherwise I recommend listening to DataFactory events (like SavingPage) and add a reference to the pages to a custom database or the DDS with the date. This way you can access them easy without any slow database query.
You could also use the ChangeLog if you are using a later version of EPiServer. http://world.episerver.com/Documentation/Items/Tech-Notes/EPiServer-CMS-6/EPiServer-CMS-60/Change-Log/
But as i states, there will probably be breaking changes to it in future versions..
Thanks for your comments!
But i need Property like linkcollection to show the recent pages so after that Editor can sort these up and down.
Quite specific need :) Then you have to build your own property. Here is a good post about that http://joelabrahamsson.com/entry/how-to-create-a-custom-episerver-property
I need property in edot mode which shows recent added pages of particular pagetype so that editor can sort them.
Thanks in Advance!