What I ended up doing is setting all of the drawing inport settings in the program prefs, and set it to automaticly import instead of the interactive method. Then just use File, Open, set the Files of Type to DWG, and select a handful of the dwg file to import. Let them all import and then do a File, Close all, and select Yes to all to save them. Don't do too many dwg files at one time of the display buffer gets full and it wont create preview bitmaps for the files. I'd usually do about 20-30 at a time. Then, like Neil said, as I need them I add them to our symbol library. I do add some over the weekends as I have time, but I'm still working on the Simpson Catalog Toolbar
As they are done I'll add them to my website.