Xoops works great for me! I use 2.0.5 which was made available through the fantastico option of my server. I have used dozens of modules for 2.0.5 that are advertised as use for 2.0. Is there a difference? I have one module that is just not working, the discography. Is it perhaps due to any changes in 2.0 and 2.0.5? does not seem to be many module options geared to 2.0.5 so i thought perhaps the 2.0's were the same. if not is it best to use 2.0 seeing that everything i would want to use is in 2.0 format?

Most modules do work with 2.0.5 and 2.0.5.1. The ones that don't need to be upgraded by their developers. You can use any version of XOOPS you want, but the newer versions fix bugs and have better security. If you use older versions of xoops, you are leaving your site vulnerable to security risks.