How to add comma after field, only if a field has data?

[hark]

I want it to read like this for example:

 

<<First Name>>, You Could Win $1000!

 

or just

 

You Could Win $1000!

 

The problem is the comma. Some of the First Name fields are unpopulated and in that case, the comma is not needed. How do I write a rule to add the comma if there is data in the First Name field, but not add it if the field is empty?

 

I've tried searching for code and learning something on my own and instead I've spent too much time trying to wing it. Project is due!

 

Thanks for any help.

[dreimer]

if (Field("Your Field") != "")
  return Field("Your Field") + ", You Could Win $1000!";
   else return "You Could Win $1000!";

[hark]

hey man, you rock!

 

I'm new at the scripting thing so I really appreciate the reply.