[2008] Folder exists and create, file exists and delete, and process exists and end

[Shadowz O Death]

Hello everyone! I am using Microsoft Visual Basic 2008 Express Edition. How do I check to see if a folder exists? If the folder exists, how do I check to see if a file in the folder exists? If the file exists, how do I check to see if the file is running? If the file is running, how do I stop running the file? How do I delete the file? If the folder does not exist, how do I create the folder? Thank you!