Using VBA to Open a File Name that changes slightly

Hi All,

I want to use vba to open a file where the name changes slightly each week it comes in. Let's say the file name is f:/Folder A 05212009

I can do this to open it:

Workbooks.Open Filename:=":/Folder A 05212009"

But, next week when the file name is Folder A 05282009, it won't open. Is there any way to write the code so that it picks up this pattern and can open it each week?

I greatly appreciate any help you can give me!