MATLAB: File names

files

I have a script that is asking me what files should it manipulate.
the two categories of files are
Hello1_14022011_1_XV_xls and Hello1_14022011_1_SF_XV_xls
when the question arise (so that the program can make the directory of all the files and manipulate them) in the program i put Hello1_****2011_*_XV_xls for the first category. The problem is that the fifth * will make the program to understand both the categories.
Is there a a way to stop the name reading at those situations?
Thanks

Best Answer

What about using '?' instead of '*', and why do you have '****', are you sure you don't want that to be ????