Power Shell 2 Scripting : Create a new Windows log called Activity13_1 and assign a provider

Would someone from this forum help me with my PowerShell Assignment please?

I am not so good at powershell and not getting help from the instructor at all. Need this done very soon. so Please help with this scrip. Thank you.

Activity 1: Scan for changes to a file

•  This script
  will look for changes to a file every few seconds. Upon
  finding changes, it will write status log entries.
• This script should do the following:
  
  1. Create a new Windows log called Activity13_1 and assign a provider
  2. Create a new file named "c:tempmytarget.txt"
  3. Add a few lines of text to it
  4. Assign the value "NO" to a variable called $trigger
  5. Assign an empty string to a variable called $old_len
  6. Assign an empty string to a variable called $old_writetime
  7. Create a while loop that will loop until $trigger is equal to "YES"
  8. Write a log entry stating that your script is starting up
  9. Inside of the loop:
     • Check to see if the file exists; if it does not,
       write a log entry to your new log stating that the script is
       terminating with error, set $trigger equal to "YES", and then continue the loop
     • Get file information for your file using Get-ChildItem
     • If $old_len and $old_writetime are empty strings, set your variables equal to the Lengh and LastWriteTime properties from your object and then continue the loop
     • Assign the Length of your object to a new variable called $curr_len
     • Assign the LastWriteTime of your object to a new variable called $curr_writetime
     • Compare the old and current variables:
       • If both sets of variables are equal, then sleep the script for 5 seconds and then continue the loop
       • If the length variables are different, write a log entry describing your findings, sleep the script for 3 seconds and then continue the loop
       • If the writetime variables are different, write a log entry describing your findings, sleep the script for 3 seconds and then continue the loop
• Test the script in Powershell
• Experiment with deleting the file, changing the file
  name, and/or changing the file contents while the script is running.
  Ensure that log entries are being written to your log.

Activity 2: Scan for open ports

• This script
  will look for the existence of an open port every 60
  seconds. It will write status log entries of its findings.
• This script should do the following:
  1. Create a new Windows log called Activity13_2 and assign a provider
  2. Assign the value "NO" to a variable called $trigger
  3. Assign the value ":61300" to a variable called $target_port
  4. Create a while loop that will loop until $trigger is equal to "YES"
  5. Write a log entry stating that your script is starting up
  6. Inside of the loop:
     • Execute "netstat -a" and assign its output to a variable called $curr_output
     • Create a foreach loop to iterate over the contents of the array in $curr_output
     • For each element in the loop:
       • If $target_port is contained in the
         line then check to see if the string "LISTENING" is found within the
         line as well;
         if both strings are found within the line then
         write an entry to the log stating your find; sleep the script for 60
         seconds and then continue the loop
       • If $target_port is contained in
         the line and "LISTENING" is NOT found, then write an entry to the log
         stating your find; sleep the script for 60 seconds and then continue the loop
       • If $target_port is NOT contained in the line then write an entry to the log stating your find; sleep the script for 60 seconds and then continue the loop