VB: determining the size of a directory

Hi ,
2 Questions

My name is Derek . I’ve just wrote a program to copy files from a local directory to a network drive.

Question 1: I need to know how I can use VB5 to determine the size of the local directory before sending copying the files over to the network drive.
The purpose of doing so is to ensure that users do not copy to big files to the network drive via this program I wrote. I tend to keep the space limit about 600 MB per local dir.

Question 2: How do I schedule the vb program to run every Friday at 2pm.

Please let me know soon