There is not a folder where these things are saved, but the inforamtion is generally stored in the Networking portion of your computer controls. I am glad that you are up and running and if you ever have any further questions or issues I hope that you remember the experience you had here on the forums and know that me and my colleagues are here almost 24-7 to help support you and your needs.
I hope you are having a wonderful week, and I hope that the weather where you are located is as beautiful there as it is here!
I believe if you install the printer via USB you have the option to convert it from USB to wireless, this would be the easiest route to take. On the other issue, from what I have found on that issue is that it is a flaw in the MS OS which prevents the computer from sleeping.