Get specific files From folder using Foreach Loop.

Hi All

SSIS 2008 R2 :

I have one Folder over server path which contains more then 50 .txt files

But I need only 8 Files from that folder using for each loop only because I have to process each file.

All files which I need has different names like ,, finance.txt, share.txt, web.txt , transfer.txt, quality.txt 

what I did: like took for each loop give the files path for collection and store that value in variable.

Is there any way can I add inside for each loop any script task or any Precedence Constraint Expression.

Please help me on that. If someone had Script task code or Constraint expression

Thanks

Mark