These are all very basic. Any one of the example projects could have told you the commands. Try using the language refrence included in all versions of the IDE next time, before you post a message.
Open a new instance of a window ( still in the main thread ):
Code:
dim w as new window1 (Or whatever the name of yours is)
w.show
folderitem.delete, folderitem.copyTo, binarystream, textinputstream. Look it up.