said by Cesco:Being on a mac, am not familiar of how hings work on PC.
I did find you this video if it helps any:
(youtube clip)
I found that clip earlier, but it requires two user IDs on the PC. I found an article that lists how many various types of things one device can have. Basically, I can't do what I want to do, as any device can only have one PhotoStream account. In the case of a PC, that is not exactly correct- each user account (which is more or less a virtual PC) can have its own PhotoStream account, but I only want to have one PC user account.