Need a script to delete files

You can probably manage with .bat files. Here is an example, based on keyboard input of the first file creation date you want to keep in the folders.

How to call the routine:

filedel 07-12-2005

It is assumed that both routines are stored at the root of the directory structure where your Outgoing directories are.

Here is the main routine filedel.bat:

@echo off
set date = %1
@echo date = %date%
@echo press Enter to continue
@echo press Ctrl-C to stop the deletion of older files from Outgoing
pause
@echo starting loop
for /F %%i in ('dir /AD /B /S Outgoing*') do filesub.bat %date% "%%i"
@echo end of loop

... and here is the subroutine filesub.bat:

@echo off
@echo parameter 1: date mm-dd-yyyy %1
@echo parameter 2: directory path %2
@echo create an empty work directory
rmdir /S /Q workdir
mkdir workdir
@echo copy files newer than the date to workdir
xcopy %2\*.* workdir\. /D:%1 /C /Q /K /X
@echo delete all files from directory
del /Q %2\*.*
@echo copy files back from workdir
xcopy workdir\*.* %2\. /C /Q /K /O

Enjoy!