When "Perspective" is ON, the clipping occurs as you zoom in close. You can also pass through a face to see inside the model or what's behind the face. Note that clipping only becomes noticeable if you zoom into a line or vertex. Zooming into a face may not show clipping. With perspective OFF, the clipping occurs as you zoom out (away) from the model. But you can zoom in extremely close without clipping. However you CANNOT pass through a face. You can adjust the point of clipping by playing with the "field of view" but anything very different from default will look distorted at various zoom values.

I agree! I am using the LinksManager Plugin by Dieder...His instructions on using the plugin require that you unzip the file into the Plugins folder. It will not work to copy and paste the folder into the Plugins folder. ThomThom recommended that I try to open the plugin from a sketchup shortcut using an argument. It creates the icon. But because the encrypted part of the plugin does all the functional work, I can not modify it to look to another drive for the files. (The error I get when I run the .rb part of the plugin in the ruby console is that the .rbs is undefined). I am thinking it will be best to try and create one .zip package that contains everything I need to distribute, and puts it into the Plugins folder so that I don't have to remap the location of the .rbs file. My group of users is small~10, they have no experience with sketchup, and they may or may not have access to the internet...I know--the dark ages. I need to make the process of accessing the collaborative model as easy, painless, and complete as possible. The group requested that I distribute hard copies of all needed peices--software, plugins, model, files, on a DVD drive. The next best option is an external hard drive. I have to get this to work, so invent I will! (Unless someone comes up with a slick way to solve this ) Thanks for your help!