Ok... while I didn't find the post on UO boards, I guess it's not that hard. Note that the way I found is not very comfortable, and doesn't make any good sense for purposes that require both accounts to be used actively. It might be some help for those that just require a "sitting duck" - healing comes to mind.
First: You'll need .. ar.. just noticed that my german version of Win XP will have different names... hmm.. I'll translate and you'll have to find what I'm talking about
First create two (at least) user accounts. If the standard settings are active those will be chosable from the "welcome" screen, and should be "quick switchable" (gawds.. that sounds horrible....).
Start one of the usernames as usual, fire up UO (with Assist, if you want to), then go to "logout" and choose "switch user". Start up second user profile, start UO and so on. In theory you could run more than 2 accounts with this, limited only by your processing power.
To switch from one account to another you'll need to "logout/switch user" every time, which makes the whole process not exactly quick.
Hope this helps... and is legal
