We didn't use any sort of converting tool - Our documentation needed to be cleaned up anyways.
I did assist with the coding of some of the pages and anyone with even a basic knowledge of HTML should be pretty comfortable creating content.
As far as utilizing this as a technician, I am pretty happy with it overall.
I am satisfied with the speed of going from one page to the next and I do like the overall layout that my company chose.
We support a number of secondary education institutions and have our Wiki setup as follows:
Each page is an individual school. Each section on the page encompasses a certain aspect of that school that we support (Password Resets, Desktop, Network, Distance Education, ect.). At the top of each page is a navigation bar with a link to each section.
There was a very minor learning curve going from the old KB to the Wiki based KB, but after just a few days the ease of use has definitely increased my productivity. Our old KB was called Robo or something - no clue if this is a marketed KB or something our admins cooked up themselves.
I've been using a Wiki based KB for about 6 months now and the only complaint I really have is that we don't fully utilize the Discussions tab to discuss possible changes that need to be made. Our tech leads have been very good about making updates we request through email and they are all in agreement that it is very easy to make updates to Wiki.