So tell me more about the DIY section. Do you just want to setup a new forum section named DIY?
It would be a tab at the top of the page beside "FAQ" and "My Posts" there is room there for it. Not a new forum section, a seperate page that is a list of all DIY's, rating on how hard they are, approx time it takes, and then it would have another page in that shows the DIY and at the bottom a link to the "how-to" thread it is posted from, that way if u have questions you can post them there but if not the DIY look really presentable and easy to read/print ect, just a blank page more or less with only the DIY, links below are good example of what it should look like when completed and give u a general idea what i'm trying to do. I think it's easier to look at that list than search thru 5 different how-to sections. It's a full list of everything with easy access, any updates can be added fairly easily as well if someone has a problem and wants to warn everyone they might encounter it while doing that project.
http://www.elantragtclub.com/id126.html
http://www.elantragtclub.com/id522.html
It makes it much easier for printing a how-to if your working on a project, and i think it looks so much better than how-to threads, the how-to thread is still important for ppl to ask questions but you wouldn't have to post all the pics in the thread, making it less cluttered.