What I am trying to achieve is shown in the below screenshot.

URL: http://imageshack.us/photo/my-images/10/viewdate.jpg/



 what I have written is :

<apex:pageBlockSectionItem >
	    <apex:outputLabel value="Created By" for="created__by"/>
	    <apex:outputLabel value="{!createdby}" id="created__by"/> 
</apex:pageBlockSectionItem>

and the extension has a createdby property which only fetches the FirstName, LastName and CreatedDate and merges them together. 

But then again the look up on the CompanyName on mouse hovering is not rendered on doing this.

Can anyone give some ideas on this?