Partially Bold Text in SSRS 2005 using Expression ?

Hi,

I am using SSRS 2005.

I have one requirment. I need to Partially Bold some part of Text in column.

Below is the Example.

Name < - -- Column in SSRS 2005 Report.

This column contains combination of Last Name and First Name. All Database record contains Last name , while in some record our requirment is to append First Name with that.

That is i aleady handled using Nested IIF Expression.

Now, i want to display appended First Name in normal while all Last Name whihc is Database Field in BOLD Font.

How is it possible ?