Excel 2007 :: Saving Text In Given Cell To C Drive

My set up win xp pro office 2007. Object is to save the text from a given cell to drive C naming the file with the value in another cell. E.g.

Contents of cell ("AA5") is a string and the content of ("D5") is a number

I have tried altering the code posted which i found on the forum, it works fine for the purpose as it was indented e.g. save the workbook and in my case saves it as the value in cell D5.

I guess I need to use some form of object to pass to the save as method but my knowledge of this is somewhat limited in addition as the is a possibility of either the cell being empty and the file name existing on the C drive, I need to disable the windows warnings and just go ahead and save it over writing what is on the C drive is of no importance as it will be the same data anyway, I can wrap the save in a "if Len ( AA5)= 0" to stop it trying to save if the cell if empty it the save the text string i am having problems with:

Option Explicit
Sub SaveAsExample()
Dim FName As String
Dim FPath As String
FPath = "C:"
FName = Sheets("Sheet1").Range("A1").Text
ThisWorkbook.SaveAs Filename:=FPath & "" & FName
End Sub