To find a member, use the search function. Write nothing in the search field, but the account name in the Author field. You'll get all the posts by that member, and can click on one of them to see his post and thus get to his profile.
I think its a good idea. It would make a number of things a bit easier to take care of. However, for now given that Kitrik is still away if I'm not mistaken, I think we may have to make do with Nagathi's suggestion.
Just below our beatiful Druchii.net logo, you'll find a bar. Search for Control Panel, and hold your mouse over it. Amongst the options, it says Memberlist. Now, in the right top corner you can choose ways to select the members. What do you know...alphabetical order is one of them