http://www.wikitree.com/wiki/Special:SearchPerson#text-search
If you enter the profile number you have into the text search field, it will find the person you're looking for.
Trevor -
Welcome! I'm also fairly new and this was one of the first things I wondered about.
All you have to do is change the ID portion of you own Wikitree address:
http://www.wikitree.com/g2g/user/Harris-12414
In other words, if I wanted to go straight to my page from yours above, I change your ID to mine, or:
http://www.wikitree.com/g2g/user/Blevins-707
So easy - - IF you knwo the ID.