how to get now() or time() into a string?

[BrianB]

Well, I am saving files, and I would like to save them to a folder named after now) or date() and time() , so when my program starts it makes a string with this in it. The string has to be formatted so windows will allow it to be used as a folder name.
How can i make a string with the contents of Now() or similar in it?
thanks