Mapping repeated record into a single line

Hi,

I need some guidance in implementing the following scenario:


I get a repeated record containing a number of fields.

I need to be able to loop through each available inbound record, combine 
two of these fields and combine everything into a single outbound flat 
file field..


Inbound Feed:

<InputRecord>
   <FirstName>A</FirstName>
   <LastName>B</LastName>
</InputRecord>
<InputRecord>
   <FirstName>C</FirstName>
   <LastName>D</LastName>
</InputRecord>
<InputRecord>
   <FirstName>E</FirstName>
   <LastName>F</LastName>
</InputRecord>


Desired outbound feed should look something like:

     ABCDEF



Any idea or help would highly be appreciated....

Thank you all in advance..

Kam