Well . . .

• opendir and readdir for getting lists of filenames (or glob; alternately you may want File::Find or File::Find::Rule if you need to search a hierarchy but this sounds like a single flat directory)
• mkdir to make a directory (or possibly mkpath from File::Path)
• File::Copy for move (or do it yourself with rename)
• or use copy from the same module and then unlink instead of moving

Here's an outline of your program:

open directory handle for E:\temp

while the handle returns filenames
  match filename against spec.
  - capture year and day of year.
  if name does not match, skip to the next file.

  test for existence of target path.
     if does not exist, create it.
  move file to new location.
[download]

Between the outline above and Fletch's pointers to docs you should be able to put something together.

You should also take a look at next. perlretut will help you match the filenames to your spec and capture the information you want.

Once you have a script that works, you can create an entry in Scheduled Tasks.

Also worth mentioning, many tutorial neglect to suggest using strict, warnings and diagnostics. I strongly recommend using all 3 when starting out. diagnostics can be skipped after you've learned to interpret Perl's compiler alerts.