The software author reads this forum, and I"m sure he'll correct me if I'm wrong (which I am a lot).
When WUHU is installed, it puts a shortcut into the startup folder. When the computer is started (or restarted), WUHU should launch and (in my case) minimizes automatically. If you have the information entered into the setup tab for WU, WUHU should remember it and start sending to WU. I know all three of mine do.
In the WUHU folder there is an .ini file. With WUHU closed (or not running), you can open that file and look through it. As you scroll down through the file you should see your ID and Password and upload times and stuff. It may look foreign at first, but if you look at it for a few minutes, you should be able to decipher it.
Remember that WU ID and Passwords are case sensitive.
Good luck!
Oh, PS: Welcome and enjoy your stay!