Need A Powershell Script

Hello Experts,
I am looking for simple PowerShell script to scan a network directory and pull a list of excel files (using the following naming convention “result_MM-DD_YYYY.csv “ ) and compile the data in to new workbook called “CompileResults_MM-DD-YYYY.csv”.  Each excel file is the output of another script I use to scan Local Admin User Group (from list of servers) and look for changes.  Each file is laid out with the following headings “Computer Name, Administrators, and Status”.  What I am looking for the script to do is scan the particular file directory with the list of excel file (using the following naming convention “result_MM-DD_YYYY.csv “ ) for the past 7-10 days (based on the date indicated in the file name).  Then compile the data on to the new spreadsheet called, “CompileResults_MM-DD-YYYY.csv”, using  date from each source file “result_MM-DD_YYYY.csv “ in the new spreadsheet (example below) to indicate when the person was added or removed from the Local Administrators Group for that server.  Thank you for your help

Example of Source output Excel file called “result_MM-DD_YYYY.csv”
Computer Name      Administrators               Status
ComputerName1      Group1                        Removed
ComputerName1      Domain Admins       Removed
ComputerName1      Backup Admins        Added
ComputerName1      Enterprise Admins       Added
ComputerName2      Enterprise Admins       Removed
ComputerName2      Group2                       Removed
ComputerName2      Domain Admins      Added
ComputerName2      Backup Admins       Added
ComputerName2      Enterprise Admins      Removed
ComputerName2      User1                      Added
ComputerName3      Group2                      Added
ComputerName3      Domain Admins      Added
ComputerName3      Backup Admins       Added
ComputerName4      Enterprise Admins      Removed
ComputerName4      Group0                      Added
ComputerName4      Enterprise Admins      Added



Example of output file called “CompileResults_MM-DD-YYYY.csv” I am looking to do…

Date       Computer Name      Administrators              Status
1/1/2013      ComputerName1      Group1                       Removed
1/1/2013      ComputerName1      Domain Admins      Removed
1/1/2013      ComputerName1      Backup Admins       Added
1/1/2013      ComputerName1      Enterprise Admins      Added
1/1/2013      ComputerName2      Enterprise Admins      Removed
1/1/2013      ComputerName2      Group2                      Removed
1/1/2013      ComputerName2      Domain Admins      Added
1/1/2013      ComputerName2      Backup Admins       Added
1/1/2013      ComputerName2      Enterprise Admins      Removed
1/1/2013      ComputerName2      User6                      Added
1/1/2013      ComputerName3      Group2                      Added
1/1/2013      ComputerName3      Domain Admins      Added
1/1/2013      ComputerName3      Backup Admins       Added
1/1/2013      ComputerName4      Enterprise Admins      Removed
1/1/2013      ComputerName4      Group0                      Added
1/1/2013      ComputerName4      Enterprise Admins      Added
1/2/2013      ComputerName1      Group1                       Removed
1/2/2013      ComputerName1      Domain Admins      Removed
1/2/2013      ComputerName1      Backup Admins       Added
1/2/2013      ComputerName1      Enterprise Admins      Added
1/2/2013      ComputerName2      Enterprise Admins      Removed
1/2/2013      ComputerName2      Group2                      Removed
1/2/2013      ComputerName2      Domain Admins      Added
1/2/2013      ComputerName2      Backup Admins       Added
1/2/2013      ComputerName2      Enterprise Admins      Removed
1/2/2013      ComputerName2      User1                      Added
1/3/2013      ComputerName1      Group2                       Added
1/3/2013      ComputerName1      Domain Admins      Added
1/3/2013      ComputerName1      Backup Admins       Added
1/3/2013      ComputerName2      Enterprise Admins      Removed
1/3/2013      ComputerName2      Group0                      Added
1/3/2013      ComputerName2      Enterprise Admins      Added
result-MM-DD-YYYY.csv
CompileResults-MM-DD-YYYY.csv