This isn't the most robust, but if you open a File Explorer window such as My Documents, and type
ftp://10.x.y.2 where x.y is your team number, that should get you a file window pointing to the cRIO. you can then create folders and drill in and out similar to Windows.
I mention this isn't robust because it works fine most times, but sometimes Windows "remembers" what things look like and doesn't really show you what is on the cRIO -- very annoying, and I don't know of a good way to synch it up.
For that reason, people may tell you to get a real ftp client. Google for a free ftp client and you will find lots. You then connect to the 10.x.y.2 number and use their UI to do what you want.
Greg McKaskle