Text DataSource for an InfoObject

Hi Experts,

I have a transaction DataSource by which I get the SAP UserID in my report,But for the InfoObject say User I want the to load a Text Table having Complete Name of the user rather than just 6 or 7 Digits(sap login) of the User,I want to create a TEXT Datasource and load it to that InfoObject but as the Original Datasource is from a view I am not getting the right tables to match and create a view so that I can load the Complete Text of the user into the InfoObject.

How to populate the Data to a Text Datasource,

I refered to the tables starting with Usr* but did'nt find any help

Any other way in solving the issue.

Thanks in advance

Raga