More Dot Net Nuke

I have been asked to make another DotNetNuke site for the company. I have gotten kinda used to the environment on the old site, but for some reason the environment on this one is a little different so it has taken sometime getting used to once again. During this process I have figured out a bug in one of the modules we used. It seems that when a customer buys the product, it is not registering them correctly in the web app. Now we have other ways of making users so its not a huge deal, but I can't seem to figure out why this module is not working. I have tested about a million times to no avail. One thing I definitely hate bout dotnetnuke is that I cant debug anything in their environment, Im sure if I had that capability, I could figure out this problem in a flash, instead Im trying to figure out how to export my site to visual studio and somehow getting debugging going in that envirnment. Once again DNN turns out to be a pain in the ass.